NO. 1206. SYNOPfUS OF THE XAIADES SIMPSON. 643 



* Anodonta nilssonii KUSTER, part, Conch. Cab. Ano., 1853, p. 61, pi. xvn, figs. 3, 4. 



* Anodon imbricata ANTHONY, Am. Jl. Conch., I, 1865, p. 159, pi. xiv, fig. 1. 



* Anodonta imbricata B. H. WRIGHT, Check List, 1888. *P^ETEL, Conch. Sam., Ill, 



1890, p. 180. 

 "Anodon subhijtata ANTHONY, Am. Jl. Conch., I, 1865, p. 160, pi. xv, fig. 1. 



* Anodonta subinflata B. H. WKIGHT, Check List, 1888.* PASTEL, Conch. Sam., 



Ill, 1890, p. 185. 



* ? Anodon edentulus SOWERBY, Conch. Icon., XVII, 1867, pi. xvu, fig. 60. 



* Anodonta houghtonensis CURRIER, Shell-bearing Moll. Mich., 1881, p. 14, pi. i, 



fig. 2.* B. H. WRIGHT, Check List, 1888. 



tANODONTA GRANDIS var. LEONENSIS Lea. 



"Anodonta leonensis LEA, Pr. Ac. N. Sci. Phila., VI, 1862, p. 169; * Jl. Ac. N. Sci. 

 Phila., VI, 1866, p. 25, pi. ix, fig. 24; *Obs., XI, 1867, p. 29, pi. ix, fig. 24. 

 *CLESSIN, Conch. Cab. Ano., 1874, p. 131, pi. XLII, figs. 3, 4. * B. H. WRIGHT, 

 Check List, 1888.* PVETEL, Conch. Sam., Ill, 1890, p. 181. 



* Margaron (Anodonta) leonensis LEA, Syn., 1870, p. 78. 



fANODONTA GRANDIS var. GIGANTEA Lea. 1 



"Anodonta giganteaLEA, Tr. Am. Phil. Soc., 1834, p.l, pi. i, fig. 1; *Obs., II, 1838, p. 

 1, pi. i, fig. 1. *TROSCHKL, Arch, fiir Nat., V, 1839, Pt. 2, p. 238. * HANLEY, 

 Test. Moll., 1842, p. 219. * CATLOW and REEVK, Couch. Nona., 1845, p. 67. 

 " KUSTER, Couch. Cab. Ano., 1853, p. 6, pi. i, figs. 1, 2. * CONRAD, Pr. Ac. N. Sci. 

 Phila., VI, 1853, p. 264.* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 502. 



* B. H. WRIGHT, Check List, 1888.* P.ETEL, Conch. Sam., Ill, 1890, p. 179. 

 Moryarita (Anodonta) gigantea LEA, Syn., 1836, p. 52; 1838. p. 31. 

 Murgaron (Anodonta) gigantea LEA, Syn., 1852, p. 50; 1870, p. 81. 



* Anodon gigantea SOWERRY, Conch. Icon., XVII, 1867, pi. vm, fig. 18. 



* Anodon giganteus SOWERBY, Conch. Icon., XVII, 1870, pi. xxxvn, fig. 152. 



* t Anodonta plana- LKA, Tr. Am. Phil. Soc., V, 1834, p. 48, pi. vn, fig. 18; Obs., 



I, p. 160, pi. vn, tig 18.* FERUSSAC, Gner. Mag., 1835, p. 25.* HANLEY, 

 Test. Moll., 1842, p. 219.* H. and A. ADAMS, Gen. Ree. Moll., II, 1857, p. 

 503. * CLESSIN, Conch. Cab. Ano., 1874, p. 142, pi. XLVI, figs. 1, 2. *B. H. 

 WRIGHT, Check List, 1888.* PJETEL, Conch. Sam:, III. 1890, p. 183. 



* Margarita (Anodonta) plana LEA, Syn., 1836, p. 52; 1838, p. 30. 



* Anodon plana UK KAY, Zool. of N. Y., Pt. 5, 1843, p. 201, pi. xvu, fig. 232.* CAT- 



LOW and REEVE, Conch. Nona., 1845, p. 67. * SOWERBY, Conch, Icon., XVII, 

 1869, pi. xxiv, fig. 94. 



* Margaron (Anodonta) plana LEA, Syn., 1852, p. 50 ; 1870, p. 80. 



* Anodonta declii-is CONRAD, Am. Jl. Sci., XXV, 1834, p. 341, pl.i, fig. 11; New F. 



W. Shells, 1834, p. 73.* FERUSSAC, Gner. Mag., 1835, p. 25. MOLLKR, Syn., 

 Nov. Gen., 1836, p. 194.* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, p. 263. 



* t Margarita (Anodonta) decora LEA, SYN., 1836, p. 52; 1838, p. 30. 



* Anodonta decora LEA, Tr. Am. Phil. Soc., VI, 1838, p. 64, pi. xx, fig. 63; * Obs., II, 



1838, p. 64, pi. xx, fig. 63. *TROSCHEL, Arch, fiir Nat., V, 1839, Pt. 2, p. 238. 



* HANLEY, Test. Moll., 1842, p. 219.* CONRAD, Pr. Ac. N. Sci. Phila., VI, 1853, 

 p. 263.* H. and A. ADAMS, Gen. Rec. Moll., II, 1857, p. 502. *CLESSIN, Conch. 

 Cab. Ano., 1873, p. 71, pi. xvn, figs. 1, 2.* B. H. WRIGHT, Check List, 1888. 



* P^TEL, Conch. Sam., Ill, 1890, p. 178. 



'A variety of grandis. The type is a large, heavy form, with a considerably 

 developed posterior ridge, the shell somewhat truncated above and behind the ridge, 

 I have frequently seen such shells which are evidently pathologic. 



2 This name is written palna in above citation: a typographical error, no doubt. 



