Margaritana michaudi Locard, 1889
Michaud, 1831. Compl. Hist. Nat. Moll., Draparnaud: 113, pl. 16, fig. 29 [as ‘Unio elongata’].
Locard, 1889. Contr. Faune Malacol. Franc. 13: 123 [17], 180 [74].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 150.
Type(s): PARALECTOTYPE MNHN_22368, Vire [Calvados].

Margaritana pyrenaica Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 123 [17], 181 [75].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 150.
Type(s): SYNTYPE MNHN_22478, Carcenac (Aveyron).

Unio adonus Locard, 1889
‘Servain’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 146 [40], 211 [105].
‘Servain’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 175, fig. 188.
Type(s): LECTOTYPE MNHN_22085 (by Graf, 2011: 456), La Loire a Basse Indre (Loire-Inf.).

Unio aegericus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 169 [63], 250 [144] [as ‘ægericus’].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 203 [as ‘ægericus’].
Type(s): HOLOTYPE (MONOTYPY) MNHN_22086, La Baise, à Valence (Gers).

Unio albanorum Locard, 1889
‘F. Pacôme’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 151 [45], 222 [116].
‘F. Pacôme’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 184.
Type(s): LECTOTYPE MNHN_22088 (by Graf, 2011: 456), La Grande-Garonne, à Fréjus (Var).

Unio aldemaricus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 176 [70], 262 [156].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 213.
Type(s): LECTOTYPE MNHN_22091 (by Graf, 2011: 456), l’Aisne, à Guignicourt (Ardennes).

Unio alpacamus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 178 [72].
(error for Unio alpecanus Locard, 1882)

Unio alpecanus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 285, 355.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 177 [71].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 215.
Type(s): LECTOTYPE MNHN_22094 (by Graf, 2011: 457), l’Oise à Creil.

Unio amblyus Locard, 1889
‘Castro’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 152 [46], 225 [119].
‘Castro’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 184, fig. 198.
‘Castro’ Locard, 1899. Conchyliol. Portug.: 224.
Type(s): LECTOTYPE MNHN_22097 (by Graf, 2011: 458), La Loire, à Balbigny (Loire).

Unio ampulodon Locard, 1889
‘Coutagne Mss. teste Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 128 [22]. [nomen nudum]
(intro'd as syn of Unio dubisianopsis Locard, 1889)

Unio andegavensis Locard, 1882
‘Servain’ Locard, 1882. Prodr. Malac. Franç. 1: 289, 359.
‘Servain’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 142 [36].
‘Servain’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 167.
Type(s): POSSIBLE SYNTYPE MNHN_22100, La Maine à Angers.

Unio andeliacus Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 138 [32], 196 [90].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 165.
Type(s): LECTOTYPE MNHN_22101 (by Graf, 2011: 458), le Gouet, à Saint-Brieue (Côtes-du-Nord).

Unio antimoquinianus Locard, 1889
Dupuy, 1843. Essai Moll. Terr. Fluv. du Gers: fig. 3 [as ‘moquinianus’]. [in part]
Locard, 1889. Contr. Faune Malacol. Franc. 13: 153 [47], 227 [121].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 179.
Type(s): SYNTYPE MNHN_22106, l'Echez, à Vic-de-Bigorre.

Unio aramonensis Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 156 [50], 231 [125].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 191.
Type(s): LECTOTYPE MNHN_22107 (by Graf, 2011: 459), le Rhône, Aramon (Gard).

Unio ararisianus Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 155 [49], 229 [123].
‘Coutagne’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 190.
Type(s): SYNTYPE MNHN_22109, La Saône à Lyon.

Unio arcuatulus Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 165 [59], 244 [138].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 197.

Unio arenarum Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 289, 358.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 144 [38].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 171.
Type(s): IDIOTYPE MNHN_22110, Basse Indre (Loire-Inf.).

Unio atharsus Locard, 1889
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 169 [63], 251 [145].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 204.
Type(s): LECTOTYPE MNHN_22117 (by Graf, 2011: 461), Varennes (Jura).

Unio aturicus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 129 [23], 188 [82].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 157.
Type(s): HOLOTYPE (MONOTYPY) MNHN_22118, Bahus (Landes).

Unio bagnolasicus Locard, 1889
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 127 [21], footnote. [nomen nudum]

Unio balbignyanus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 147 [41], 217 [111].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 178.
Type(s): LECTOTYPE MNHN_22122 (by Graf, 2011: 462), La Loire, à Balbigny (Loire).

Unio barbozanus Locard, 1899
Castro in Locard, 1889. Contr. Faune Malacol. Franc. 13: 160 [54]. [nomen nudum]
Castro in Locard, 1899. Conchyliol. Portug.: 233.

Unio baryus Locard, 1889
‘Bourg.’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 124 [18], footnote. [nomen nudum]

Unio batavellus Locard, 1885
‘Letourneux’ Locard, 1885. Bull. Soc. Sci. Nat. Rouen 21: 11.
‘Letourneux’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 144 [38].
‘Letourneux’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 170, fig. 184.
Type(s): LECTOTYPE MNHN_22127 (by Graf, 2011: 462), La Bouille, près de Rouen (Seine-Inf.).

Unio berenguieri Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 292, 361.
Bourguignat in Bérenguier, 1882. Faune malac. Var: 100.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 153 [47].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 182.
Type(s): SYNTYPES MNHN_22129, Canal des Moulins à Roquebrune (Var).

Unio berilloni Locard, 1882
Locard, 1882. Prodr. Malac. Franç. 1: 298, 365.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 174 [68].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 212.
Type(s): LECTOTYPE MNHN_22130 (by Graf, 2011: 462), lac d’Ondres (Basses-Pyrénées).

Unio berthelini Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 290, 359.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 137 [31].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 163.
Type(s): IDIOTYPE MNHN_22132, La Marne, à Charenton (Seine).

Unio besnardianus Locard, 1889
Servain, 1888. Bull. Soc. Malac. France 5: 317. [nomen nudum]
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 141 [35], 206 [100].
‘Servain’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 172, fig. 186 [as ‘besnardinus’].
(renamed Unio besnardi Germain, 1904)
Type(s): LECTOTYPE MNHN_22133 (by Graf, 2011: 463), La Loire, à Saint-Gemmes (Maine-et-Loire).

Unio bigorriensis Locard, 1882
‘Millet’ Locard, 1882. Prodr. Malac. Franç. 1: 284.
‘Millet’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 125 [19].
(new name for Unio bigerrensis Millet, 1843)

Unio blanchianus Kobelt, 1913
‘Letourneux’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 127 [21]. [nomen nudum]
Kobelt, 1913. Icon. Land- und Süssw.-Moll. 19: 27, pl. 524, figs. 2719-2720.

Unio borcherdingi Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 153 [47].
(new name for Unio macrorhynchus Borcherding, 1889)

Unio bosnicus Locard, 1889
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 132 [26].
(new name for Unio bosnensis Möllendorff, 1874)

Unio bouchardi Locard, 1889
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 149 [43].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 180.
(new name for Unio arcuata Bouchard-Chantereaux, 1838)
Type(s): LECTOTYPE FIGURED SPECIMEN (by Graf, 2011: 464), ditches of Saint-Omer, fed by the Aa.

Unio bourgeticus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 291, 359.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 130 [24].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 156.
Type(s): POSSIBLE SYNTYPES MNHN_22139, lac du Bourget (Savoie).

Unio bouthyi Locard, 1889
‘Pechaud’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 127 [21], footnote. [nomen nudum]

Unio brebissoni Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 152 [46], 223 [117].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 185, fig. 199.
Type(s): LECTOTYPE MNHN_22143 (by Graf, 2011: 464), l’Aure, à Bayeux (Calvados).

Unio brevierei Locard, 1882
‘Bourguignat’ Locard, 1882. Prodr. Malac. Franç. 1: 286 [as ‘brevieri’], 356.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 148 [42].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 178.
(correct name for Unio brevieri Locard, 1882)
Type(s): LECTOTYPE MNHN_22145 (by Graf, 2011: 465), La Canne, à Goulnot.

Unio brindosopsis Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 151 [45], 221 [115].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 184, fig. 197.
Type(s): LECTOTYPE MNHN_22148 (by Graf, 2011: 465), la Vienne, à Limoges.

Unio campylus Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 165 [59], 243 [137].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 197.
Type(s): LECTOTYPE MNHN_22157 (by Graf, 2011: 466), [illegible] Mortagne (Vendrée).

Unio cancrorum Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 296, 365.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 163 [57].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 195.
Bourguignat in Locard, 1899. Conchyliol. Portug.: 237.
Type(s): LECTOTYPE MNHN_22159 (by Graf, 2011: 466), la Saône, à Heuilly-sur-Saône (Côte-d’Or).

Unio carantoni Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 295, 364.
‘Coutagne’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 129 [23].
‘Coutagne’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 157.
Type(s): IDIOTYPE MNHN_22162, [illegible] (Charente).

Unio caroliensis Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 159 [53], 237 [131].
‘F. Pacome’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 172.
Type(s): LECTOTYPE MNHN_22167 (by Graf, 2011: 467), Charolles (Saône-et-Loire).

Unio carynthiacus Lea, 1836
‘Zeigler’ of Authors.
Lea, 1836. Synopsis Fam. Naiades: 27.
Schlüter, 1838. Kurzgef. Syst. Verz. Conch. Samml.: 33.
Lea, 1838. Synopsis Fam. Naiades: 20.
J.F. Schmidt, 1840. Bull. Soc. imp. Nat. Moscou 13: 435.
C.B. Adams, 1847. Cat. Gen. Sp. Adams: 14.
Lea, 1852. Synopsis Fam. Naiades: 30.
Lea, 1870. Synopsis Fam. Naiades: 47.
Schröder, 1885. Bull. Soc. Malac. France 2: 229.
Servain, 1888. Bull. Soc. Malac. France 5: 317.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 141 [35].
Germain, 1904. Bull. Soc. Sci. Nat. Ouest France 4: 264.
Germain, 1931. Faune de France 22: 728.
(error for Unio carinthiacus Rossmässler, 1836)

Unio castroi Locard, 1899
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 160 [54]. [nomen nudum]
Bourguignat in Locard, 1899. Conchyliol. Portug.: 234.

Unio catalaunicus Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 133 [27], 192 [86].
‘Coutagne’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 160.
Type(s): LECTOTYPE MNHN_22171 (by Graf, 2011: 467), La Marne, à Charenton (Seine).

Unio caumonti Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 145 [39], 207 [101].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 171.

Unio chlorellus Locard, 1889
Castro in Locard, 1889. Contr. Faune Malacol. Franc. 13: 158 [52].
(error for Unio chorellus Locard, 1899)

Unio chorellus Locard, 1899
Castro in Locard, 1889. Contr. Faune Malacol. Franc. 13: 158 [52] [as ‘chlorellus’]. [nomen nudum]
Castro in Locard, 1899. Conchyliol. Portug.: 227.

Unio condatinus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 287, 356.
‘Letourneux’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 158 [52].
‘Letourneux’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 189.
Type(s): IDIOTYPE MNHN_22180, La Marne, à Cholet (Maine-et-Loire).

Unio corbini Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 293, 362.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 170 [64].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 199.
Type(s): POSSIBLE SYNTYPE MNHN_22181, l’Étang d’Église-Vieille, près de la Porge (Gironde).

Unio cossonianus Locard, 1889
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 127 [21], footnote. [nomen nudum]

Unio courtilieri Locard, 1889
‘Hattemann’ of Authors.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 132 [26].
‘Hattemann’ Germain, 1904. Bull. Soc. Sci. Nat. Ouest France 4: 256 [18].
‘Hattmann’ Germain, 1931. Faune de France 22: 724, 727.
Lopes-Lima et al., 2024. MPE 195: suppl. append. 2, p. 3.
(error for Unio courtillieri Hattemann, 1859)

Unio crassatellus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 286, 356.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 136 [30].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 162.
Type(s): LECTOTYPE MNHN_22182 (by Graf, 2011: 469), La Canne, à Jailly (Nièvre).

Unio cristoforii Locard, 1889
‘Adami’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 153 [47].
(error for Unio cristophori Adami, 1886)

Unio cyprinorum Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 289, 358.
‘Berthier’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 142 [36].
‘Berthier’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 168.
Type(s): IDIOTYPE MNHN_22185, l’Ornain (Meuse).

Unio cyrtus Locard, 1899
Castro in Locard, 1889. Contr. Faune Malacol. Franc. 13: 165 [59]. [nomen nudum]
Castro in Locard, 1899. Conchyliol. Portug.: 257.

Unio danemorae Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 284, 354 [as ‘danemoræ’].
‘Mörch’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 147 [41] [as ‘danemoræ’].
‘Mörch’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 177 [as ‘danemoræ’].
Type(s): IDIOTYPE MNHN_22186, lac d’Ondres (Basses-Pyrénées).

Unio desfontainianus Locard, 1899
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 162 [58]. [nomen nudum]
Bourguignat in Locard, 1899. Conchyliol. Portug.: 237.

Unio dilophius Servain, 1888
‘Bourguignat’ Servain, 1888. Bull. Soc. Malac. France 5: 316, footnote. [nomen nudum]
Locard, 1889. Contr. Faune Malacol. Franc. 13: 136 [30], footnote. [nomen nudum]

Unio diptychus Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 143 [37], 201 [95].
‘Surault’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 169.
Type(s): POSSIBLE SYNTYPE MNHN_22192, La Loire à Ingrandes.

Unio dolfusianus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 299, 366.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 167 [61; as ‘dollfusianus’].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 200, fig. 214.
Type(s): IDIOTYPE MNHN_22197, l’Oise à Creil.

Unio dollfusianus Locard, 1889
‘Bourguignat’ of Authors.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 167 [61].
Germain, 1931. Faune de France 22: 736.
Prie, 2012. MalaCo 8: 431.
(error for Unio dolfusianus Locard, 1882)

Unio dubisianopsis Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 128 [22].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 155.
(error for Unio dubisiopsis Locard, 1882)

Unio dubisianus Locard, 1882
‘Coutagne’ Locard, 1882. Prodr. Malac. Franç. 1: 291 [as ‘dubisanus’], 360.
‘Coutagne’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 129 [23].
‘Coutagne’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 158.
(correct name for Unio dubisanus Locard, 1882)
Type(s): SYNTYPE MNHN_22198, La Clange (Jura).

Unio dubisiopsis Locard, 1882
Locard, 1882. Prodr. Malac. Franç. 1: 291 [as ‘dubisopsis’], 360.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 128 [22] [as ‘dubisianopsis’].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 155 [as ‘dubisianopsis’].
(correct name for Unio dubisianopsis Locard, 1889)

Unio edyus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 299, 367.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 177 [71].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 215.

Unio ellipsopsis Locard, 1899
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 140 [34]. [nomen nudum]
Bourguignat in Locard, 1899. Conchyliol. Portug.: 218.

Unio euthymeanus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 166 [60], 245 [139].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 203.
Type(s): LECTOTYPE MNHN_22202 (by Graf, 2011: 473), La Saône à Collonges (Rhône).

Unio exauratus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 145 [39], 210 [104].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 175.
Type(s): LECTOTYPE MNHN_22206 (by Graf, 2011: 473), La Siagne, à Cannes (Alpes-Maritimes).

Unio fabaeformis Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 294, 362 [as ‘fabæformis’].
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 156 [50], 230 [124] [as ‘fabæformis’].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 188 [as ‘fabiformis’].
Type(s): POSSIBLE SYNTYPE MNHN_22208, La Rhône à Arles.

Unio fagoti Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 294, 362.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 171 [65].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 200.

Unio falsus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 295, 363.
Bourguignat, 1883. Aperçu Unionid. Pénins. Ital.: 58.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 161 [55].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 195, fig. 210.
Type(s): LECTOTYPE MNHN_22209 (by Graf, 2011: 474), La Bonde-Gendret près Troyes (Aude).

Unio fascellinus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 295, 364.
‘Servain’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 162 [56].
‘Servain’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 196.
Type(s): SYNTYPE MNHN_22213, l’Étang de Veaux (Nièvre).

Unio feliciani Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 285, 355.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 134 [28].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 161, fig. 175.
Bourguignat in Locard, 1899. Conchyliol. Portug.: 217.
Type(s): POSSIBLE SYNTYPE MNHN_22215, La Moselle.

Unio financei Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 143 [37], 205 [99].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 171.
Type(s): IDIOTYPE MNHN_22217, La Marne à Châlons (Marne).

Unio forojuliensis Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 293, 361 [as ‘foroguliensis’].
Bérenguier, 1882. Faune malac. Var: 95.
‘Bérenguier’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 150 [44].
‘Bérenguier’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 181.
(correct name for Unio foroguliensis Locard, 1882)
Type(s): LECTOTYPE MNHN_22223 (by Graf, 2011: 475), Fréjus (Var).

Unio fourneli Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 300, 367.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 177 [71].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 214.
Type(s): IDIOTYPE MNHN_22225, La Marne à Lagny (Seine-et-Marne).

Unio frayssianus Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 155 [49], 227 [121].
‘Coutagne’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 189.
Type(s): SYNTYPES MNHN_22226, Étang de Meyranne (Bouches-du-Rhône).

Unio gallicus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 296, 365.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 154 [48].
Bourguignat in Locard, 1893. Coqu. Eau Douce Saumâtre France: 189, fig. 203.
Type(s): POSSIBLE SYNTYPES MNHN_22231, Le lac du Bourget (Savoie).

Unio germanjanicus Locard, 1889
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 139 [33], footnote. [nomen nudum]

Unio gestroianus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 296, 365.
Bourguignat, 1883. Aperçu Unionid. Pénins. Ital.: 51.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 159 [53].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 194, fig. 208.
Type(s): LECTOTYPE MNHN_22234 (by Graf, 2011: 476), La Saône, à Asnière.

Unio giberti Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 131 [25], 191 [85].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 215, fig. 227.
Type(s): LECTOTYPE MNHN_22237 (by Graf, 2011: 477), La Marne à Lagny (Seine-et-Marne).

Unio gobionum Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 296, 364.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 158 [52].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 193.
Type(s): IDIOTYPE MNHN_22253, canal du Midi, à Carcassonne.

Unio hammonis Locard, 1889
‘Servain’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 168 [62].
(error for Unio hammoniensis Servain, 1888)

Unio hattemani Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 146 [40], 212 [106].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 176.
Type(s): SYNTYPE MNHN_22254, La Loire, à Basse-Indre.

Unio hauterivianus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 288, 358.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 150 [44].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 183.
‘Bourguignat’ Locard, 1899. Conchyliol. Portug.: 222.
Type(s): IDIOTYPE MNHN_22257, l'Agout, à Lavaur (Tarn).

Unio holandrei Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 299, 366.
‘de Saulcy’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 167 [61] [as ‘hollandrei’].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 201 [as ‘hollandrei’].
Type(s): IDIOTYPE MNHN_22262, Lagny (Seine-et-Marne).

Unio hollandrei Locard, 1889
‘de Saulcy’ of Authors.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 167 [61].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 201.
Germain, 1904. Bull. Soc. Sci. Nat. Ouest France 4: 278.
Germain, 1931. Faune de France 22: 736.
Prie, 2012. MalaCo 8: 431.
(error for Unio holandrei Locard, 1882)

Unio hopitali Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 152 [45], 224 [118].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 186 [as ‘hospitali’].
Type(s): SYNTYPE MNHN_22263, May (Calvados).

Unio hydrelus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 157 [51], 235 [129].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 192, fig. 206.
Type(s): LECTOTYPE MNHN_22264 (by Graf, 2011: 479), Brainans (Jura).

Unio ignari Locard, 1889
‘Nilss.’ Drouët, 1857. Étud. Naïades. France, Unio: 72, pl. 4, fig. 1 [as ‘U. ater’].
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 146 [40], 213 [107].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 176.
Type(s): SYNTYPES MNHN_22270, Le Mandrezey, à Saulcy-sur-Meurthe (Vosges).

Unio ignariformis Locard, 1889
‘Dup.’ Drouët, 1857. Étud. Naïades. France, Unio: 100, pl. 9, fig. 1 [as ‘U. platyrhynchoideus’].
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 147 [41], 214 [108].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 177.

Unio ingrandiensis Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 143 [37], 202 [96].
‘Sarault’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 173.
Type(s): POSSIBLE SYNTYPE MNHN_22282, Ingrandes (Maine-et-Loire).

Unio joannisi Locard, 1882
‘Bourguignat’ Locard, 1882. Prodr. Malac. Franç. 1: 296.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 163 [57].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 196.
(new name for Unio pictorum var. compressus de Joannis, 1859)
Type(s): IDIOTYPE MNHN_22287, la Seine, au Pecq (Seine-et-Oise).

Unio jourdheuili Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 296, 364.
‘Ray’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 163 [57].
‘Ray’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 198, fig. 212.
Type(s): IDIOTYPE MNHN_22288, canal de Givors, à Givors (Rhône).

Unio jousseaumei Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 294, 363.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 169 [63].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 204, fig. 217.
Type(s): IDIOTYPE MNHN_22289, La Saône, à Auxonne (Côte-d’Or).

Unio jurianus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 129 [23], 187 [81].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 157, fig. 171 [as ‘juranus’].
Type(s): LECTOTYPE MNHN_22292 (by Graf, 2011: 482), La Valouze (Jura).

Unio lagnisicus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 291, 359.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 127 [21] [as ‘lagnysicus’].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 154 [as ‘lagnysicus’].
Type(s): SYNTYPE MNHN_22303, Condal (Saône-et-Loire).

Unio lagnysicus Locard, 1889
‘Bourguignat’ of Authors.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 127 [21].
Westerlund, 1890. Fauna Paläarct. Binnenconch. 2(7): 84.
Locard, 1893. Coqu. Eau Douce Saumâtre France: 154.
Dumas, 1895. Rev. Sci. Bourbonnais, Suppl.: 47.
Rochebrune, 1903. Bull. Mus. Hist. Nat. 9: 389.
Kobelt & Haas, 1910. Icon. Land- und Süssw.-Moll. 17: 37.
(error for Unio lagnisicus Locard, 1882)

Unio lemotheuxi Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 145 [39], 208 [102].
‘Servain’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 175, fig. 189.
Type(s): LECTOTYPE MNHN_22306 (by Graf, 2011: 484), le Reyran (Var).

Unio lesumicus Locard, 1889
Michaud, 1831. Compl. Hist. Nat. Moll., Draparnaud: 108, pl. 16, fig. 25.
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 158 [52], 236 [130].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 194.
Type(s): SYNTYPE MNHN_22308, Vegesack, près Brême.

Unio ligericus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 289, 358.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 142 [36].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 169.
Type(s): IDIOTYPE MNHN_22310, La Loire à Ingrandes.

Unio locardianus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 287, 356.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 138 [32].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 164, fig. 178.
Type(s): IDIOTYPE MNHN_22316, l’Albane (Côte-d’Or).

Unio lugdunicus Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 168 [62], 247 [141].
‘Coutagne’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 209.
Type(s): LECTOTYPE MNHN_22318 (by Graf, 2011: 485), Les fossés du fort de la Vitriolerie, à Lyon.

Unio macropisthus Locard, 1889
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 172 [66], 258 [152].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 210.
(homonym of Unio macropisthus White, 1886)
Type(s): LECTOTYPE MNHN_22321 (by Graf, 2011: 486), La Seine à Rouen (Seine-Inférieure).

Unio macropsisthus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 258 [152].
(error for Unio macropisthus Locard, 1889)

Unio macrorhynchus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 292, 361.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 132 [26].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 158, fig. 172.
Type(s): LECTOTYPE MNHN_22326 (by Graf, 2011: 486), lac du Bourget.

Unio malafossianus Locard, 1882
‘P. Fagot’ Locard, 1882. Prodr. Malac. Franç. 1: 297.
‘Fagot’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 175 [69].
‘P. Fagot’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 211.

Unio manculus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 130 [24], 190 [84].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 156.
Type(s): LECTOTYPE MNHN_22329 (by Graf, 2011: 486), Gigny (Jura).

Unio marcellinus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 285, 355.
‘Berthier’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 149 [43].
‘Berthier’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 180.

Unio margaritanopsis Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 123 [17], 182 [76].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 151, fig. 163.

Unio mariae Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 159 [53], 236 [130] [as ‘mariæ’].
‘F. Pacome’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 172 [as ‘mariæ’].
Type(s): IDIOTYPE MNHN_22342, La Loire à Nantes (Loire-Infereur).

Unio materniacus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 143 [37], 203 [97].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 168, fig. 182.
Type(s): LECTOTYPE MNHN_22347 (by Graf, 2011: 488), la Somme à Abbeville.

Unio matronicus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 289, 358.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 143 [37].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 170.
Type(s): LECTOTYPE MNHN_22355 (by Graf, 2011: 489), La Marne à Lagny (Seine-et-Marne).

Unio melantatus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 147 [41], 216 [110].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 177.
Type(s): LECTOTYPE MNHN_22360 (by Graf, 2011: 489), La Loire à Balbigny (Loire).

Unio melas Locard, 1882
Coutagne in Locard, 1882. Prodr. Malac. Franç. 1: 285, 355.
‘Coutagne’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 128 [22].
‘Coutagne’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 155, fig. 169.
Type(s): SYNTYPE MNHN_22363, Saulcy-sur-Meurthe (Vosges) [written on shell].

Unio meretricis Locard, 1882
Stabile, 1845. Faun. Lug.: 62, fig. 76.
‘Bourguignat’ Locard, 1882. Prodr. Malac. Franç. 1: 295, 363.
Bourguignat, 1883. Aperçu Unionid. Pénins. Ital.: 53 [as ‘meretrix’].
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 156 [50].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 91, fig. 205.
Type(s): IDIOTYPE MNHN_22364, La Drée, à Épinac (Saône-et-Loire).

Unio meyrannicus Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 155 [49], 228 [122].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 190.
Type(s): POSSIBLE SYNTYPES MNHN_22367, Étang de Meyranne (Bouches-du-Rhône).

Unio microdactylus Locard, 1889
Fagot in Locard, 1889. Contr. Faune Malacol. Franc. 13: 169 [63].
(error for Unio mycrodactylus Locard, 1899)

Unio milneedwardsi Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 287, 357 [as ‘milne-edwardsi’].
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 151 [45] [as ‘mine-edwardsi’].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 183.

Unio mineedwardsi Locard, 1889
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 151 [45].
(error for Unio milneedwardsi Locard, 1882)

Unio monterosatoi Locard, 1889
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 156 [50].
‘Bgt.’ Westerlund, 1890. Fauna Paläarct. Binnenconch. 2(7): 157.
(error for Unio monterosati Bourguignat, 1883)

Unio moreletianus Locard, 1889
‘Deshayes’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 152 [46].
(error for Unio moreleti Deshayes, 1847)

Unio mucidellus Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 160 [54], 239 [133].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 193, fig. 207.
Type(s): SYNTYPE MNHN_22378, l’Aroz, à Saint-Maurice (Nièvre).

Unio mucidulinus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 168 [62], 249 [143].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 206.
Type(s): LECTOTYPE MNHN_22382 (by Graf, 2011: 492), Varennes (Jura).

Unio mucidulus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 298, 366.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 168 [62].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 206, fig. 219.
Type(s): IDIOTYPE MNHN_22384, La Saône, à St-Germain-au-Mont-d'Or.

Unio mycrodactylus Locard, 1899
Fagot in Locard, 1889. Contr. Faune Malacol. Franc. 13: 169 [63] [as ‘microdactylus’]. [nomen nudum]
Fagot in Locard, 1899. Conchyliol. Portug.: 240.

Unio necomensis Locard, 1889
‘Drouët’ of Authors.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 132 [26].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 159.
Germain, 1931. Faune de France 22: 725.
(error for Unio neocomensis Drouët, 1881)

Unio nicolloni Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 141 [35], 200 [94].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 173.
Type(s): HOLOTYPE (MONOTYPY) MNHN_22404, Nantes.

Unio novus Locard, 1899
Castro in Locard, 1889. Contr. Faune Malacol. Franc. 13: 165 [59]. [nomen nudum]
Castro in Locard, 1899. Conchyliol. Portug.: 258.

Unio nubilus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 138 [32], 198 [92].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 165, fig. 179.
(homonym of Unio nubilus Lea, 1868)
Type(s): LECTOTYPE MNHN_22414 (by Graf, 2011: 493), Verpillière (Isère).

Unio nuperus Locard, 1889
‘Parreys’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 139 [33], footnote. [nomen nudum]

Unio oberthurianus Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 168 [62], 248 [142].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 206.
Type(s): IDIOTYPE MNHN_22421, La Grosne, à la Ferté (Saône-et-Loire).

Unio occidentalis Locard, 1889
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 149 [43], 220 [114].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 180.
‘Bourguignat’ Locard, 1899. Conchyliol. Portug.: 220.
(homonym of Unio occidentalis Conrad, 1836)
Type(s): LECTOTYPE MNHN_22424 (by Graf, 2011: 494), Balbigny (Loire).

Unio odontopachius Locard, 1889
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 127 [21], footnote. [nomen nudum]

Unio oeschrus Locard, 1899
Casrtro in Locard, 1889. Contr. Faune Malacol. Franc. 13: 146 [40] [as ‘œschrus’]. [nomen nudum]
Castro in Locard, 1899. Conchyliol. Portug.: 219 [as ‘œschrus’].

Unio oesiacus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 164 [58], 241 [135] [as ‘œsiacus’].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 198 [as ‘œsiacus’].
Type(s): LECTOTYPE MNHN_22425 (by Graf, 2011: 494), L’Oise, à Pontoise.

Unio oncomensis Locard, 1899
Castro in Locard, 1889. Contr. Faune Malacol. Franc. 13: 152 [46] [as ‘oncomenus’]. [nomen nudum]
Castro in Locard, 1899. Conchyliol. Portug.: 225.

Unio oncomenus Locard, 1889
Castro in Locard, 1889. Contr. Faune Malacol. Franc. 13: 152 [46].
(error for Unio oncomensis Locard, 1899)

Unio orbus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 138 [32], 195 [89].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 165.
Type(s): LECTOTYPE MNHN_22427 (by Graf, 2011: 494), Pentoise (Jura).

Unio orthellus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 288, 357.
Bérenguier, 1882. Faune malac. Var: 97.
‘Bérenguier’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 140 [34].
Bérenguier in Locard, 1893. Coqu. Eau Douce Saumâtre France: 166.
Type(s): LECTOTYPE MNHN_22433 (by Graf, 2011: 495), La Grande-Garonne, à Fréjus (Var).

Unio orthus Locard, 1882
Coutagne in Locard, 1882. Prodr. Malac. Franç. 1: 288, 357.
‘Coutagne’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 139 [33].
‘Coutagne’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 166.
Type(s): POSSIBLE SYNTYPE MNHN_22435, l’Albane (Côte-d’Or).

Unio oxyrhynchus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 285, 355.
‘Brevière’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 149 [43].
‘Brevière’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 180.
(homonym of Unio oxyrhynchus Martens, 1861)
Type(s): LECTOTYPE MNHN_22438 (by Graf, 2011: 495), La Canne, dans la Nièvre.

Unio pacomei Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 126 [20], 185 [79].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 154.
Type(s): SYNTYPE MNHN_22440, Couzon (Rhône).

Unio palleus Locard, 1889
‘Parreys’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 156 [50].
(error for Unio pallens Rossmässler, 1842)

Unio passavanti Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 159 [53], 238 [132].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 178.
Type(s): POSSIBLE SYNTYPE MNHN_22442, Passavant (Haute-Seine).

Unio perroudi Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 164 [58], 242 [136].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 209.
Type(s): LECTOTYPE MNHN_22454 (by Graf, 2011: 497), fort de la Vitriolerie, à Lyon.

Unio philippei Locard, 1882
‘Dupuy’ of Authors.
Locard, 1882. Prodr. Malac. Franç. 1: 284, 354.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 150 [44].
Westerlund, 1890. Fauna Paläarct. Binnenconch. 2(7): 161.
Fagot, 1892. Bull. Soc. Ramond 27: 37.
Locard, 1893. Coqu. Eau Douce Saumâtre France: 183.
Germain, 1931. Faune de France 22: 732.
(new name for Unio philippii Dupuy, 1849)

Unio pilloti Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 291, 360.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 128 [22].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 157.
Type(s): IDIOTYPE MNHN_22460, Passavant (Haute-Saône).

Unio pinciacus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 294, 362.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 167 [61].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 201.
Type(s): IDIOTYPE MNHN_22461, La Marne à Châlons (Marne).

Unio platyrhynchoideus Locard, 1882
‘Dupuy’ of Authors.
Locard, 1882. Prodr. Malac. Franç. 1: 297.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 154 [48].
Westerlund, 1890. Fauna Paläarct. Binnenconch. 2(7): 121.
Locard, 1893. Coqu. Eau Douce Saumâtre France: 187.
Germain, 1931. Faune de France 22: 739.
Haas, 1940. Zool. Ser. Field Mus. Nat. Hist. 24: 123.
Haas, 1969. Das Tierreich 88: 27.
Fauna Europaea, 2012. Fauna Europa: [web].
(error for Unio platyrinchoideus Dupuy, 1849)

Unio potamius Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 289, 359.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 140 [34].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 169.
Type(s): IDIOTYPE MNHN_22470, La Brizotte (Côte-d’Or).

Unio rathymus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 284, 354.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 125 [19], 184 [78].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 152, fig. 166.
Bourguignat in Locard, 1899. Conchyliol. Portug.: 215.
Type(s): IDIOTYPE MNHN_22482, la Seine près Paris.

Unio ravoisini Locard, 1889
‘Deshayes’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 169 [63].
(error for Unio ravoisieri Deshayes, 1847)

Unio rayi Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 291, 360.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 127 [21].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 155.
Type(s): LECTOTYPE MNHN_22483 (by Graf, 2011: 500), Gigny (Jura).

Unio renei Locard, 1882
Locard, 1882. Prodr. Malac. Franç. 1: 294, 362.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 156 [50].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 187.
Type(s): SYNTYPE MNHN_22492, Landes.

Unio riciacensis Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 288, 357.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 139 [33].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 166.
Type(s): IDIOTYPE MNHN_22493, Mont-sous-Vaudrey (Jura).

Unio rostratellus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 297, 365.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 173 [67].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 208.
Type(s): IDIOTYPE MNHN_22496, La Seine à Rouen (Seine-Inférieure).

Unio royanus Locard, 1889
‘Locard’ of Authors.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 171 [65].
Westerlund, 1890. Fauna Paläarct. Binnenconch. 2(7): 110.
Germain, 1931. Faune de France 22: 737.
Prie, 2012. MalaCo 8: 432.
(error for Unio royianus Locard, 1889)

Unio royianus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 171 [65], 255 [149].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 202, fig. 215 [as ‘royianus’].
Type(s): LECTOTYPE MNHN_22509 (by Graf, 2011: 502), fossés du fort de la Vitriolerie, à Lyon.

Unio saintsimonianus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 287, 357 [as ‘saint-simonianus’].
‘P. Fagot’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 158 [52] [as ‘Saint-Simonianus’].
‘P. Fagot’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 192 [as ‘saint-simonianus’].
(renamed Unio saintsimoni Germain, 1904)
Type(s): POSSIBLE SYNTYPES MNHN_22511, Le canal du Midi, à Villefranche-Lauraguais.

Unio salmurensis Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 157 [51], 234 [128].
‘Servain’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 192.
Type(s): SYNTYPE MNHN_22512, La Loire, à Orléans (Loiret).

Unio scotinus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 148 [42], 218 [112].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 178, fig. 192.
Type(s): LECTOTYPE MNHN_22518 (by Graf, 2011: 503), Selles (Haute-Saône).

Unio seguyanus Locard, 1889
‘Pechaud’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 127 [21], footnote. [nomen nudum]

Unio seneauxi Locard, 1889
‘Linn.’ Draparnaud, 1806. Hist. Moll. France: 131, pl. 11, figs. 3 [as ‘Unio pictorum var. B’].
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 145 [39], 208 [102].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 174, fig. 187 [as ‘senauxi’].
Type(s): LECTOTYPE MNHN_22523 (by Graf, 2011: 503), La Loire à Orléans.

Unio septentrionalis Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 284, 354.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 149 [43].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 181, fig. 194.
Type(s): IDIOTYPE MNHN_22528, le Mandrezey, à Saulcy-sur-Meurthe (Vosges).

Unio sequanicus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 289, 358.
‘Coutagne’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 142 [36].
‘Coutagne’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 169, fig. 183.
Type(s): LECTOTYPE MNHN_22529 (by Graf, 2011: 504), La Marne à Lagny (Seine-et-Marne).

Unio siliquiformis Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 173 [67], 259 [153].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 208.
Type(s): LECTOTYPE MNHN_22538 (by Graf, 2011: 504), Heuilley-sur-Saône (Côte-d’Or).

Unio socardianus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 286, 355.
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 134 [28].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 161.

Unio sousanus Locard, 1889
Drouët, 1857. Étud. Naïades. France, Unio: pl. 7, fig. 3 [as ‘Unio requienii var. acruata’].
de Joannis, 1859. Ann. Soc. Linn. Maine-et-Loire 3: 291, pl. 11, fig. 2 [as ‘Unio requienii var. acruatus’].
‘Castro’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 165 [59].
‘Castro’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 197, fig. 211 [as ‘souzanus’].
‘Castro’ Locard, 1899. Conchyliol. Portug.: 258.
Type(s): LECTOTYPE MNHN_22545 (by Graf, 2011: 505), le Rhône, à Valence (Drôme).

Unio sperchinus Locard, 1889
‘Thièse’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 141 [35], footnote. [nomen nudum]

Unio stygnus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 148 [42], 219 [113].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 179.
Type(s): LECTOTYPE MNHN_22556 (by Graf, 2011: 507), Passavant (Haute-Saône).

Unio subamnicus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 137 [31], 194 [88].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 163.
Type(s): SYNTYPE MNHN_22559, La Saône, à Auxonne (Côte-d’Or).

Unio subhispanus Locard, 1889
‘Castro’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 171 [65], 253 [147].
‘Castro’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 200.
‘Castro’ Locard, 1899. Conchyliol. Portug.: 244.
Type(s): LECTOTYPE MNHN_22562 (by Graf, 2011: 507), La Loire, à Saint-Gemmes, près Angers.

Unio submucidus Locard, 1899
Castro in Locard, 1889. Contr. Faune Malacol. Franc. 13: 160 [54]. [nomen nudum]
Castro in Locard, 1899. Conchyliol. Portug.: 230.

Unio surraulti Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 144 [38], 204 [98].
‘Servain’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 174 [as ‘suraulti’].
Type(s): SYNTYPE MNHN_22569, La Loire à Ingrandes.

Unio talus Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 161 [55], 240 [134].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 193.
Type(s): IDIOTYPE MNHN_22571, canal de Fresquel (Aude).

Unio tameganus Locard, 1899
Castro in Locard, 1889. Contr. Faune Malacol. Franc. 13: 146 [40]. [nomen nudum]
Castro in Locard, 1899. Conchyliol. Portug.: 221.

Unio torsatellus Locard, 1882
Bourguignat in Locard, 1882. Prodr. Malac. Franç. 1: 294, 363.
‘Berthier’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 167 [61].
‘Berthier’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 201.

Unio triffoiricus Locard, 1889
‘Bourguignat’ Schröder, 1885. Bull. Soc. Malac. France 2: 229. [nomen nudum]
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 171 [65], 252 [146].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 199.
Type(s): LECTOTYPE MNHN_22576 (by Graf, 2011: 509), le Rhône, à Beaucaire (Gard).

Unio tumidulus Locard, 1889
Rossmässler, 1836. Icon. Land- und Süssw.-Moll. 1 (3): pl. 14, fig. 203 [as ‘Unio tumidus’].
Rossmässler, 1838. Icon. Land- und Süssw.-Moll. 2 (1-2): pl. 40, fig. 542 [as ‘Unio tumidus’].
Locard, 1889. Contr. Faune Malacol. Franc. 13: 176 [70], 261 [155].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 213.
(homonym of Unio tumidulus Lea, 1856)
Type(s): LECTOTYPE MNHN_22586 (by Graf, 2011: 510), La Seine à Rouen (Seine-Inférieure).

Unio valeryi Locard, 1889
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 127 [21], footnote. [nomen nudum]

Unio valliericus Locard, 1889
Bourguignat in Locard, 1889. Contr. Faune Malacol. Franc. 13: 139 [33], 199 [93].
‘Bourguignat’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 165.
Type(s): SYNTYPE MNHN_22592, l’Albane (Côte-d’Or).

Unio vardonicus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 157 [51], 232 [126].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 192.
Type(s): LECTOTYPE MNHN_22596 (by Graf, 2011: 510), Aramon (Gard).

Unio veillanensis Locard, 1882
‘H. Blanc’ Locard, 1882. Prodr. Malac. Franç. 1: 292, 361.
‘H. Blanc’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 154 [48].
‘H. Blanc’ Locard, 1893. Coqu. Eau Douce Saumâtre France: 185.
Type(s): LECTOTYPE MNHN_22601 (by Graf, 2011: 511), Montpellier.

Unio visurgicus Locard, 1889
‘Servain’ of Authors.
Locard, 1889. Contr. Faune Malacol. Franc. 13: 141 [35].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 173.
Germain, 1904. Bull. Soc. Sci. Nat. Ouest France 4: 262.
(error for Unio visurgisinus Servain, 1888)

Unio zoasthenus Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 128 [22], 186 [80].
Locard, 1893. Coqu. Eau Douce Saumâtre France: 155.
Type(s): LECTOTYPE MNHN_22602 (by Graf, 2011: 511), Bois-Vieux (Jura).

Unio (cilicicus var.) anceyi Kobelt, 1913
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 146 [40] [as ‘Unio anceyi’]. [nomen nudum]
‘Bourguignat MS’ Kobelt, 1913. Icon. Land- und Süssw.-Moll. 19: 47, pl. 534, fig. 2748.
(intro'd as intra-sp. of Unio cilicicus Kobelt & Rolle, 1895)

Unio (cilicicus) var. langloisi Kobelt, 1913
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 127 [21]. [nomen nudum]
‘Bourguignat MS’ Kobelt, 1913. Icon. Land- und Süssw.-Moll. 19: 44, pl. 532, fig. 2742.
(intro'd as intra-sp. of Unio cilicicus Kobelt & Rolle, 1895)

Unio (Rhombunio ?) abrus Kobelt, 1913
‘Bourguignat’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 127 [21]. [nomen nudum]
‘Bourguignat MS’ Kobelt, 1913. Icon. Land- und Süssw.-Moll. 19: 10, pl. 516, fig. 2696.

Unio mancus var. minor Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 130 [24], footnote. [nomen nudum]

Unio mucidulinus var. curta Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 250 [144].
(homonym of Unio curtus Lea, 1859; intro'd as intra-sp. of Unio mucidulinus Locard, 1889)

Unio pictorum var. vincelus Locard, 1889
‘de Joannis’ Locard, 1889. Contr. Faune Malacol. Franc. 13: 140 [34].
(error for Unio pictorum var. vinceleus de Joannis, 1859)

Unio pilloti var. minor Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 129 [23]. [nomen nudum]
(intro'd as intra-sp. of Unio pilloti Locard, 1882)

Unio requieni var. elongata Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 157 [51], footnote. [nomen nudum]
(homonym of Unio elongata Lamarck, 1819; intro'd as intra-sp. of Unio requienii Michaud, 1831)

Unio suborbicularis var. minor Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 127 [21]. [nomen nudum]
Westerlund, 1890. Fauna Paläarct. Binnenconch. 2(7): 84. [nomen nudum]
(intro'd as intra-sp. of Unio suborbicularis Drouët, 1888)

Unio subrobustus var. curta Locard, 1889
Locard, 1889. Contr. Faune Malacol. Franc. 13: 135 [29].
(homonym of Unio curtus Lea, 1859; intro'd as intra-sp. of Unio subrobustus Servain, 1885)