de Gregorio, A. 1914. Su taluni molluschi di acqua dolce di America (American fresh water shells of America). Il Naturalista Siciliano 2 (Nuova Serie): 31-72, pls. 3-12. Available electronically.
de Gregorio, 1914. Il Nat. Siciliano 2: 64.
(homonym of Munier-Chalmas, 1864 [Mallaeidae]; intro'd as sub-gen. of Anodonta Lamarck, 1799)
Type species: Anodonta (Nayadina) venusta de Gregorio, 1914 (monotypy) = Utterbackiana suborbiculata
de Gregorio, 1914. Il Nat. Siciliano 2: 62.
(intro'd as sub-gen. of Unio Retzius, 1788)
Type species: Unio dehiscens Say, 1829 (herein) = Hemistena lata
de Gregorio, 1914. Il Nat. Siciliano 2: 41, pl. 4, figs. 2a-b.
(intro'd as intra-sp. of Unio cylindricus Say, 1817)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 50.
(error for Unio andersonensis Lea, 1872)
de Gregorio, 1914. Il Nat. Siciliano 2: 52, pl. 8, figs. 2a-d.
(intro'd as intra-sp. of Unio lanceolatus Lea, 1828)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 54.
(error for Unio buckleyi Lea, 1843)
‘Barn. Say’ de Gregorio, 1914. Il Nat. Siciliano 2: 41.
(error for Unio cylindricus Say, 1817)
‘Lea’ of Authors.
Ravenel, 1834. Cat. Rec. Shells: 6.
de Gregorio, 1914. Il Nat. Siciliano 2: 57.
Haag, 2012. N. Amer. Freshw. Mussels: 73 [as ‘Elliptio congarea’].
(error for Unio congaraeus Lea, 1831)
de Gregorio, 1914. Il Nat. Siciliano 2: 46.
(homonym of Unio consanguineus Lea, 1861)
de Gregorio, 1914. Il Nat. Siciliano 2: 51.
(intro'd as intra-sp. of Unio validus Lea, 1871)
de Gregorio, 1914. Il Nat. Siciliano 2: 52, pl. 10, fig. 1a-d.
(intro'd as intra-sp. of Unio angustatus Lea, 1831)
de Gregorio, 1914. Il Nat. Siciliano 2: 48, pl. 7, figs. 1a-d.
(intro'd as intra-sp. of Unio ocmulgeensis Lea, 1861)
de Gregorio, 1914. Il Nat. Siciliano 2: 60, pl. 10 figs. 5a-d.
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 54.
(error for Unio downiei Lea, 1858)
de Gregorio, 1914. Il Nat. Siciliano 2: 50, pl. 11, figs. 2a-c.
(intro'd as intra-sp. of Unio thorntonii Lea, 1857)
de Gregorio, 1914. Il Nat. Siciliano 2: 41, pl. 4, figs. 6a-b.
(intro'd as intra-sp. of Unio elegans Lea, 1831)
‘Green’ de Gregorio, 1914. Il Nat. Siciliano 2: 58.
(error for Unio aesopus Green, 1827)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 64.
(error for Anodonta ferussaciana Lea, 1834)
de Gregorio, 1914. Il Nat. Siciliano 2: 45, pl. 5, figs. 3a-c.
(intro'd as intra-sp. of Unio arctior Lea, 1838)
de Gregorio, 1914. Il Nat. Siciliano 2: 63, pl. 11, figs. 4a-c.
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 57.
(error for Unio gibber Lea, 1838)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 37.
(error for Unio housei Lea, 1856)
de Gregorio, 1914. Il Nat. Siciliano 2: 41, pl. 4, figs. 3a-c.
(intro'd as intra-sp. of Unio zigzag Lea, 1829)
de Gregorio, 1914. Il Nat. Siciliano 2: 45, pl. 9, figs. 1a-d.
de Gregorio, 1914. Il Nat. Siciliano 2: 64, pl. 11, figs. 5a-b.
(intro'd as intra-sp. of Anodonta ferussaciana Lea, 1834)
de Gregorio, 1914. Il Nat. Siciliano 2: 48.
(intro'd as intra-sp. of Unio plenus Lea, 1840)
‘Rafinesque’ de Gregorio, 1914. Il Nat. Siciliano 2: 43, 56.
(error for Obovaria torsa Rafinesque, 1820)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 37.
(error for Symphynota laevissima Lea, 1829)
de Gregorio, 1914. Il Nat. Siciliano 2: 14, pl. 6, figs. 1a-d.
(intro'd as intra-sp. of Symphynota compressa Lea, 1829)
de Gregorio, 1914. Il Nat. Siciliano 2: 40, pl. 4, figs. 5a-c.
(intro'd as intra-sp. of Unio triangularis Barnes, 1823)
de Gregorio, 1914. Il Nat. Siciliano 2: 41, pl. 5, figs. 1a-c.
(intro'd as intra-sp. of Unio elegans Lea, 1831)
de Gregorio, 1914. Il Nat. Siciliano 2: 57, pl. 8, figs. 3a-d.
(homonym of Unio (Elliptio) ravistellus var. majusculus Martens, 1900; intro'd as intra-sp. of Unio pullatus Lea, 1857)
de Gregorio, 1914. Il Nat. Siciliano 2: 57.
(intro'd as intra-sp. of Unio castus Lea, 1860)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 36.
(error for Monocondyloea mouhotii Lea, 1863)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 40.
(error for Unio ocmulgeensis Lea, 1861)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 58.
(error for Unio ocmulgeensis Lea, 1861)
‘Conrad’ de Gregorio, 1914. Il Nat. Siciliano 2: 44.
(error for Unio ogeecheensis Conrad, 1849)
de Gregorio, 1914. Il Nat. Siciliano 2: 51, pl. 10, figs. 3a-d.
(intro'd as intra-sp. of Unio anaticulus Lea, 1861)
de Gregorio, 1914. Il Nat. Siciliano 2: 62, pl. 7, figs. 2a-b; pl. 10, figs. 4a-b.
(intro'd as intra-sp. of Unio dehiscens Say, 1829)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 51.
(error for Unio othcaloogensis Lea, 1857)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 36.
(error for Unio paramattensis Lea, 1862)
de Gregorio, 1914. Il Nat. Siciliano 2: 53, pl. 5, figs. 2a-d.
(intro'd as intra-sp. of Unio compressissimus Lea, 1845)
de Gregorio, 1914. Il Nat. Siciliano 2: 40, pl. 4, figs. 4a-c.
(intro'd as intra-sp. of Unio triangularis Barnes, 1823)
de Gregorio, 1914. Il Nat. Siciliano 2: 39, pl. 3, fig. 3a-c.
(intro'd as intra-sp. of Unio tuberosus Lea, 1840)
de Gregorio, 1914. Il Nat. Siciliano 2: 61, pl. 6, figs. 4a-d.
de Gregorio, 1914. Il Nat. Siciliano 2: 64, pl. 11, figs. 3a-e.
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 61.
(new name for Unio phaselus Lea, 1856; homonym of Unio phaseolus Hildreth, 1828)
de Gregorio, 1914. Il Nat. Siciliano 2: pl. 11, caption.
(error for Anodonta foliopsis de Gregorio, 1914)
de Gregorio, 1914. Il Nat. Siciliano 2: 39, pl. 3, figs. 2a-d.
(intro'd as intra-sp. of Unio muhlfeldianus Lea, 1838)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 39.
(error for Unio prevostianus Lea, 1852)
de Gregorio, 1914. Il Nat. Siciliano 2: 60, pl. 8, figs. 1a-d.
de Gregorio, 1914. Il Nat. Siciliano 2: 60, pl. 10. figs. 2a-d.
de Gregorio, 1914. Il Nat. Siciliano 2: 41, pl. 4, figs. 1a-b.
(intro'd as intra-sp. of Unio cylindricus Say, 1817)
de Gregorio, 1914. Il Nat. Siciliano 2: 38, pl. 3, figs. 1a-d.
de Gregorio, 1914. Il Nat. Siciliano 2: 63, pl. 12, figs. 1a-e.
(intro'd as intra-sp. of Anodonta subcylindracea Lea, 1838)
de Gregorio, 1914. Il Nat. Siciliano 2: pl. 9, caption.
(error for Unio subteritus [sic] var. purchreornatus de Gregorio, 1914)
de Gregorio, 1914. Il Nat. Siciliano 2: 61, pl. 9, figs. 2a-d.
(intro'd as intra-sp. of Unio subtentus Say, 1825)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 46.
(error for Unio rostraeformis Lea, 1857)
de Gregorio, 1914. Il Nat. Siciliano 2: 54, pl. 9, figs. 3a-d.
(intro'd as intra-sp. of Unio calceolus Lea, 1828)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 55.
(error for Unio sowerbianus Lea, 1834)
de Gregorio, 1914. Il Nat. Siciliano 2: 45, pl. 6, fig. 3.
(intro'd as intra-sp. of Unio stewardsonii Lea, 1852)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 62.
(error for Anodonta subcylindracea Lea, 1838)
‘Say’ de Gregorio, 1914. Il Nat. Siciliano 2: 61.
(error for Unio subtentus Say, 1825)
‘Say’ de Gregorio, 1914. Il Nat. Siciliano 2: pl. 9, caption.
(error for Unio subtentus Say, 1825)
de Gregorio, 1914. Il Nat. Siciliano 2: 42, pl. 6, figs. 2a-d [as ‘supra speciosus’].
(intro'd as intra-sp. of Unio tuberculatus Barnes, 1823)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 56.
(error for Unio tecomatensis Lea, 1841)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 50.
(error for Unio thorntonii Lea, 1857)
de Gregorio, 1914. Il Nat. Siciliano 2: 50. [nomen nudum]
de Gregorio, 1914. Il Nat. Siciliano 2: 65, pl. 12, figs. 2a-b.
Type(s): TYPE LOCALITY TYPE_LOCALITY_MP_005, Sciota R. (Ohio).
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 40.
(error for Unio wrightii Lea, 1865)
‘Lea’ de Gregorio, 1914. Il Nat. Siciliano 2: 57.
(error for Unio geddingsianus Lea, 1840)
+ Unio geometricus Lea, 1834
+ Unio multiradiatus Lea, 1829
+ Unio monodonta Say, 1829
+ Unio formosus Lea, 1831