Haas, F. 1913. Die Unioniden. [in] H.C. Küster, Systematisches Conchylien-Cabinet von Martini und Chemnitz 9 (pt. 2, h. 48): 161-184, pls. 42-47. Available electronically.
Haas, 1911. Conch. Cab. 9 (pt. 2, h. 44): pl. 18-22.
Haas, 1913. Nachr. Bl. Dtsch. Malak. Ges. 45: 35.
Haas, 1913. Conch. Cab. 9 (pt. 2, h. 48): 173.
Type species: Unio contradens Lea, 1838 (orig. desig.) = Lens contradens
Haas, 1911. Conch. Cab. 9 (pt. 2, h. 43): pl. 17.
Haas, 1913. Conch. Cab. 9 (pt. 2, h. 48): 167.
Haas, 1913. Nachr. Bl. Dtsch. Malak. Ges. 45: 34.
Type species: Unio orientalis Lea, 1840 (orig. desig.) = Elongaria orientalis
Haas, 1913. Conch. Cab. 9 (pt. 2, h. 48): 169.
(intro'd as sub-gen. of Elongaria Haas, 1911)
Type species: Unio trompi Drouët & Chaper, 1892 (monotypy) = Elongaria trompi

Haas, 1910. Nachr. Bl. Dtsch. Malak. Ges. 42: 100.
Haas, 1911. Conch. Cab. 9 (pt. 2, h. 43): pl. 16, fig. 5.
Haas, 1913. Conch. Cab. 9 (pt. 2, h. 48): 161.
Type(s): HOLOTYPE SMF_3531, N. Guinea; Umg. v. Konstantinhafen ?
Caudiculatus caudiculatus (von Martens, 1866)
Contradens contradens (Lea, 1838) = Lens contradens+ Unio javanus Lea, 1840
+ Unio exilis Dunker, 1846
+ Unio mutatus Mousson, 1849
+ Unio mederianus Küster, 1861
Contradens dimotus dimotus (Lea, 1870) = Lens contradens+ Unio sumatrensis Lea, 1859
Contradens dimotus fischerianus (Morlet, 1883) = Lens micropterus
Contradens dimotus lugens (Drouet & Chaper, 1892) = Lens lugens
Contradens dimotus saccellus (Drouet & Chaper, 1892) = Lens lugens+ Unio sacellus ‘Drouet & Chaper’ of Authors
Contradens hageni (Strubell, 1897) = Lens contradens+ Microcondylaea bicristata Strubell, 1897
Discomya radulosus (Drouet & Chaper, 1892) = Discomya radulosa
Elongaria (s.s.) orientalis (Lea, 1840) = Elongaria orientalis+ Unio productus Mousson, 1849
+ Unio productior Lea, 1852
Elongaria (sec. Nannonaia) trompi (Drouet & Chaper, 1892) = Elongaria trompi
Microdontia anodontaeformis (Tapparone Canefri, 1883)
Microdontia ovata Haas, 1910