213 
1. Simpsonella purpurea Valenciennes. 
Taf. 24. Fig. 1—3. 
Anodonta purpurea Valenciennes, in: Voyage de Mm. A. de Humboldt et A. Bonpland, 
Recueil d’Observations de Zoologie et d’Anat. comp., 2ieme Partie, 12i&me 
Livraison, 1821, p. 236, Taf. 48bis, fig. 33—b. — Hanley, Testaceous 
Moll., 1842, p. 218. — H. & A. Adams, Genera Recent Mollusca, II, 1857, 
p. 503. — v. Martens, Mal. Blätter, Vol. 14, 1866. p. 12. — Clessin, 
in: Martini-Chemnitz, Ill. Conch. Cabinet, Genus Anodonta, 1876, p. 77, 
Taf. 19, Fig. 1. — Paetel, Katalog Conch. Samml., III, 1890, p. 183. 
Margarita (Anodonta) purpurea Lea, Synopsis, 1836. p. 51; 1838, p. 30. 
Anodon purpurea Catlow & Reeve, Conch. Nomenclator, 1845, p. 67. 
Margaron (Anodonta) purpurea Lea, Synopsis, 1852, p. 50; 1870, p. 79. 
Dalliella purpurea Simpson, Synopsis 1900, p. 832. — Preston, Records Indian Mus., 
Vol. 7, 1912, p. 214. 
Anodonta burroughiana Lea, Transactions American Fhil. Soc., V, 1834, p. 105, Taf. 16, 
fig. 49; Observations I, 1834, p. 217, Taf. 16, fig. 49. — Clessin, in: 
Martini- Chemnitz, Ill. Conch. Cabinet, Genus Anodonta, 1875, p. 164, 
Taf. 54, fig. 3—4, — Paetel, Katalog Conch. Samml,, III, 1890, p. 177. 
Margaron (Anodonta) burroughiana Lea, Synopsis, 1870, p. 81. 
Anodon burroughianus Sowerby in: Reeve, Conch. Icon., Vol. XVII, 1870, Taf. 27, 
fig. 103. 
Margarita (Unio) bengalensis Lea, Synopsis, 1836, p. 26; 1838, p. 20. 
Unio bengalensis Lea, Transactions American Phil. Soc., VI, 1838, p. 3, Taf. 2, fig. 3; 
Observations II, 1838, p. 3, Taf. 2, fig. 5. — Troschel, Archiv Natur- 
gesch,, V, 1839, Taf. 2, fig. 233. — Hanley, Testaceous Moll., 1842, 
p. 194; Bivalve Shells, 1843, p. 194, Taf. 21, fig. 50. — Catlow & 
Reeve, Conch. Nomenclator, 1845, p. 56. — H. & A. Adams, Genera 
Recent Mollusca, II, 1857, p. 493. — Chenu, Illustrations Conch., 1858, 
Taf. 22, fig. 2, 2a, 2b. — Paetel, Katalog Conch. Samml., III, 1890, 
p. 146. 
Margaron (Unio) bengalensis Lea. Synopsis, 1852, p. 30; 1870, p. 47. 
? Anodon bengalensis Sowerby, in: Reeve Conch. Icon., Vol. XVII, 1867, Taf. 14, fig. 49. 
? Anodonta bengalensis Clessin, in: Martini-Chemnitz, Ill. Conch. Cabinet, Genus Ano- 
| donta, 1876, p. 173, Taf. 57, fig. 1. — Paetel, Katalog Conch. Samml., 
III, 1890, p. 177. 
Unio verecundus Gould, Proceedings Boston Soc. Nat. Hist., III, 1850, p. 295; U. S. Ex- 
a ploration Expedition, Vol. XII, 1852, p. 431, fig. 541, 541a—c; Otia 
Conch., 1862, p. 89. — Sowerby, in: Reeve, Conch. Icon., Vol. XVI, 
1865, Taf. 25, fig. 125. — Paetel, Katalog Conch. Samml.,, III, 1890 
p. 171. a 
Unio mauritianus Lea, Proc. Academy Nat. Sciences, Philadelphia, III, 1859, p. 152; Journ. 
