622 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XXII. 



p. 100. * DROUET, Nay. Fr., 1852, p. 5, pi. i; *Rev. et Mag., IV, 1852, p. 55. 



* DUPUY, Hist. Moll. Fr., 1852, p. 601, pi. xv, fig. 14.* FORBES and HANLEY, 

 Hist. Brit. Moll., II, 1853, p. 155, pi. xxxix, fig. 3; XL, figs. 2, 3; XLI. *Kus- 

 TEK, Conch. Cab. Ano., 1853, p. 58, pi. xv. VON WAHL, Arch, fur Natur K. 

 Liv., 2d ser., I, 1855, p. 133. * MOQUIN-TANDON, Moll. Fr., II, 1855, p. 557, 

 pi. XLIV. * VON WAHL, Suss. Biv. Liv., 1855, p. 133. * NORDENSKIOLD and 

 NYLANDER, Fin. Moll., 1856, p. 90, pi. vn, fig. 78. II. and A. ADAMS, Gen. Rec. 

 Moll., II, 1857, p. 502; III, pi. cxvm, figs. 1, la, 16.* CHENU, Man., 1859, II, 

 p. 145, fig. 718.* SOWERBY, 111. Index Brit. Shells, 1859, pi. vn, No. 4. 

 REEVE, Elements of Couch., II, 1860, pi. r, No. 4. * JEFFREYS, Brit. Conch., 

 1, 1862, p. 41.* REEVE, L. and F. W. Moll. Br., 1863, p. 215, fig. 1. *BIELZ, 

 Faun. Sieben, 1863, p. 195.* HOUGHTON, Int. Obs., 1864, p. 68, pi. [i], figs. 

 1, 2. * BROT, Etudes Nayades, Leman, 1867, p. 28, pi. i, fig.l ; pi. n, figs. 1, 2. 



* KOBKLT, Faun. Nass. Moll., 1871, p. 247.* WESTERLUND, Faun. S. N. and D., 

 1873, p. 583. DROUET, Mem. Acad. Dijon, VIII, 1882, p. 25 (reprint). *L. 

 ADAMS, Coll. Manual, 1884, p. 21, pi. n, fig. 1. *P^ETEL, Conch. Sam., Ill, 

 1890, p. 178. * WESTERLUND, Faun. Pal., II, Pt. 7, 1890, p. 199. * LOCARD, 

 Coq. de Fr., 1893, p. 234. * WESTERLUND, Act. Soc. F. and F. F., XIII, No. 7, 

 1897, p. 168. 



Symphynota cygnea LEA, Tr. Am. Phil. Soc. 1830, p. 456; Obs., I, 1834, p. 70. 



* Margarita (Anodonta} cygnea LEA, Syn., 1836, p. 48; 1838, p. 29. 



*Anodon cygnea CROUCH, 111. Int. Lam., 1827, pi. ix, fig. 6. CATLOW and REEVE, 



Conch. Nom., 1845, p. 66. 

 *Margaron (Anodonta) cygnea LEA, Syn., 1852, p. 47; 1870, p. 76. 



* Anodonta cygnaa GASSEIS, Moll. Ag., 1849, p. 189. 



* Anodonta radiatm Mi'LLER, Vermium, 1774, p. 209. 

 *Hytilu8zellen8i8 GMELIN, Syst. Nat., 13th ed., I, 1788, p. 3262. 



* Anodonta zellensis WAARDENBERG, Hist. Nat. Animalium, 1827, p. 37. 



* Anodonta cellensis C. PFEIFFER, Dents. L. and Suss. Moll., I, 1821, p. 110, pi. vi, 

 fig. 1. *Bosc, Hist. Nat. Coq., Ill, 1824, p. 144. * ROSSMASSLER, Icon., IV, 

 1836, p. 22, pi. xix, fig. 280.* SCHOLZ, Schleis. L. and W. Moll., 1843, p. 119. 



* STABILE, Faun. Lug., 1845, p. 58, pi. n, fig. 69.* TROSCHEL, Arch. fiirNat., 

 XIII, Pt. 1, 1847, p. 272. * DBS MOULINS, Actes. Soc. L. Bord, XVIII, 1852, 

 p. 495.* DROUET, Rev. et Mag., IV, 1852, p. 60.* DUPUY, Nay. Fr. No. 2, 1852, 

 p. 11, pi. ii. *KUSTER, Conch,Cab. Ano., 1853, p. 16, pi. iv. fig. 3 ; v,figs. 1-4 ; vi, 

 fig. 1.* BIELZ, Faun. Sieben., 1863, p. 197. *BROT, Coq. Leman, 1867, p. 33, 

 pi. in, figs. 1-3; iv, figs. 1, 2; vi, fig. 4. *SCHRENCK, Reis. und F. Am. L., 

 II, 1867, p. 722.* KOBELT, Faun. Nass. Moll., 1871, p. 251.* LEHMAN, Die 

 Schneck., 1873, p. 297. *PJETEL, Conch. Sam., Ill, 1890, p. 177. 'WESTER- 

 LUND, Faun. Pal., II, Pt. 7, 1890, p. 211. 



* Anodonta variabilis DRAPARNAUD, Tab. Moll. Fr., 1801, p. 108. FOURNEL, Faun. 

 Moselle, I, 1836, p. 487. 



* Mytilus aronensia MONTAGU, Test. Brit., 1803, p. 172. * TURTON, Conch. Diet., 



1819, p. 116.* WOOD, Ind. Test. Rev., 1856, p. 69, pi. xn, fig. 34. 



* Anodon avonensis, TURTON, Conch. Ins. Brit., 1822, p. 211. 



* Anodonta avonensis MOQUIN-TANDON, Moll. France, II, 1855, p. 562, pi. XLVI, 



figs. 7, 8. 



* Mylilus avoensis TURTON, Brit. Faun., 1807, p. 165. 



*Mytilu8 stagnalis TURTON, Brit. Faun., 1807, p. 165.* DILLWYN, Cat. 1, 1817, p. 

 316. TURTON, Conch. Diet., 1819, p. 115. 



* Anodonta stagnalis Bosc, Hist. Nat. Coq., Ill, 1824, p. 143. * WEST^RLUND, Faun. 



Pal., II, Pt. 7, 1890, p. 199.* LOCARD, Coq. Fr., 1893, p. 228. 



* Mytilus fucatus DILLWYN, Cat. 1, 1817, p. 317. 



* Anodonta sulcata LAMARCK, An. sans Vert., VI, 1819, p. 85. *NiLSSON, Hist. Moll. 



Svec., 1822, p. 113.* DESHAYES, Enc. Meth., II, 1827, p. 147, pi. ecu.* KLEE- 



