628 PROCEEDINGS OF THE NATIONAL MUSEUM. 



ANODONTA SUBCIRCULARIS Clessin.' 



* Anodonta subcircularis CLKSSIN, Conch. Cab. Ano., 1873, p. 87, pi. xxn, figs. 3, 4. 

 Scutari Lake, European Turkey. 



ANODONTA VESCOIANA Bourguignat. 



*Anodonta vescciana BOURGUIGNAT, Aun. Mai., II, 1857, p. 34, pi. i, figs. 1, 2. 



* CLESSIN, Conch. Cab. Ano., 1873, p. 100, pi. xxix, figs. 1, 2. * KOBELT, Icon., 

 VII, 1880, p. 83, pi. ccvii, fig. 2102. *PJETEL, Conch. Sam., Ill, 1890, p. 186. 



* WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 201. 

 "Margaron (Anodonta) reacoiana LEA, Syn., 1870, p. 81. 



Asia Minor. 



t ANODONTA BERINGIANA Middendorff. 



* Anodonta cellensis SCHROTER var. beringiana MIDDENDORKF, Sib. Reise, II, 1851, 



p. 284, pi. xxvin, figs. 4-7 ; xxix, figs. 1-4.* CLESSIN, Conch. Cab. Ano., 187f, 



p. 211, pi. LXV, figs. 1, 2. 



'Anodonta youconensis LEA, Pr. Ac. Nat. Sci. Phila., XI, 1867, p. 81. 

 * Anodonta youkanensis LEA, Jl. Ac. Nat. Sci. Phila., VI, 1868, p. 287, pi. XL, fig. 



99; Obs., XII, 1869, p. 47, pi. XL, fig. 99.* CLESSIN, Conch. Cab. Ano., 1874, 



p. 133, pi. XLIII, figs. 1. 2. k B. H. WRIGHT, Check List, 1888. 

 *Margaron (Anodonta) youkanensis LEA, Syn., 1870, p. 80. 



* Anodonta youkanensis P.ETEL, Conch. Sain., Ill, 1890, p. 186. 



Kaintschatka; Alaska. 2 



t ANODONTA KENNERLYI Lea. 



'Anodonta kennerlyi LEA, Pr. Ac. Nat. Sci. Phila., IV, 1860, p. 306; * Jl. Ac. Nat. 

 Sci. Phila.,V, 1862, p. 108, pi. xvm, fig. 256; * Obs., VIII, 1862, p. 112, pi. x vin, 

 fig. 256. *B. H. WRIGHT, Check List, 1888.* P^TEL, Conch. Sam., Ill, 1890, 

 p. 181. 



* Anodon kennerlyi SOWERBY, Conch. Icon., XVII, 1870, pi. xxxiv, fig. 139. 



"Margaron (Anodonta) kennerlyi LEA, Syn., 1870, p. 79. 



Puget Sound; British Columbia. 



f ANODONTA OREGONENSIS Lea. 



* Anodonta oregonensis LEA, Tr. Am. Phil. Soc., VI, 1838, p. 80, pi. xxi, fig. 67; 



*Obs., II, 1838, p. 80, pi. xxi, fig. 67. *TROSCHEL, Arch, fiir Nat., VI, 1839; 

 II, p. 239. * CONRAD, Pr. Ac. Nat. Sci. Phila., VI, 1853, p. 264. *H. and A. 

 ADAMS, Gen. Rec. Moll., II, 1857, p. 503. * CLESSIN, Conch. Cab. Ano., 1874, 

 p. 170, pi. LVI, figs. 5, 6.* B. H. WRIGHT, Check List, 1888.* P^ETEL, Conch. 

 Sam., Ill, 1890, p. 182. 



* Margarita (Anodonta) oregonensis LEA, Syn., 1837, p. 30. 



* Anodon oregonenais CATLOW and REEVE, Conch. Norn., 1845, p. 67. * GOULD and 



CARPENTER, Pr. Zool. Soc. Loud., 1856, p. 218. * SOWERBY, Conch. Icon., 

 XVII, 1867, pi. xvii, fig. 63. 



* Margaron (Anodonta) oregonenais LEA, Syn., 1852, p. 49; 1870, p. 78. 



* Anodon cognata GOULD, Proc. Bost. Soc. Nat. Hist., Ill, 1850, p. 294. 



1 It is very hard to say what this is, as it is evidently a diseased shell. Probably 

 a member of the Cygnea group. 



2 There can be no doubt but what this species occurs in Alaska and the northeast- 

 ern part of Asia, from an examination of specimens iu the U. S. National Museum 

 collection from both regions. 



