626 PROCEEDINGS OF THE NATIONAL MUSEUM. 



Nouv. Syst., 1817, p. 107, pi. i, fig. 5.— *Dillwyn, Cat., I, 1817, p. 317.— 

 TURTON, Conch. Diet., 1819, p. 116.— * Sheppard, Tr. Linn. Soc. Lond.,XIII, 

 1820, p. 85, pi. V, fig. 5.—* Wood, Ind. Test., 1825, p. 58, pi. xii, fig. 33e.— 

 ' Hanley, Ipsa. Linn. Conch., 1855, pi. 487, pi. ii, fig. 1. — " Wood, Ind. Test. 

 Rev., 1856, p. 69, pi. xii, fig. 33. 



'Anodon anatiims Turton, Conch. Ins. Brit., 1822, p. 240. — *Sowerby, Rec. and 

 Fos. Sh., XVII, 1823, fig.— * FleminCx, Hist. Brit. Moll., 1828, p. 415.— 

 ■ Reeve, Conch. Syst., 1, 1841, p. 121, pi. xci, figs. 1, 2, 



*Anodonta anaiina Draparnaud, Hist. Moll. Fr., 1806, p. 135, pi. xii, fig. 2.— 

 *Gaertner, Vers. Syst., 1813, p. 37. — * Millet, Moll. Maine et Loire, 1813, 

 p. 75. — Klees, Desc. Test., 1818, p. 42.—* Lamarck, An. sans Vert., VI, 1819, 

 p. 85.—* C. Pfeiffer, Deuts. L. und S. Moll., 1821, Pt. 1, p. 112, pi. vi, fig. 2.— 



* NiLSSON, Hist. Moll. Svec, 1822, p. 114.—* Bosc, Hist. Nat. Coq., Ill, 1824, 

 p. 143, pi. XXIII, fig. 1. — * Waardenberg, Com. Hist. N. An., 1827, p. 37. — 

 Stark, Nat. Hist., II, 1828, p. 89.— * Kleeberg, Moll. Bor., 1828, p. 37.— 



* Rossmassler, Icon., V and VI, 1837, p. 57, pi. xxix, figs. 417-420. — * PoRRO, 

 Mai. Como., 1838, p. 109.— * Hanley, Test. Moll., 1842, p. 216; Biv. Shells, 

 1843, p. 216.— * Stabile, Faun. Lug., 1845, p. 57, pi. ii, fig. 67.— *PuTON, 

 Moll. Vosg., 1847, p. 68.—" Gassies, Moll. Ag., 1849, p. 190. — * Middkndorff, 

 Sib. Reise, II, 1851, p. 283, pi. xxi, fig. 4; xxix, figs. 5, 6.— ^Drouet, Rev. 

 et Mag., IV, 1852, p. 244; Nay. Fr., 1852, p. 4, pi. iv, fig. 1.— * Dupuy, Hist. 

 Moll. Fr., 1852, p. 610, pi. xix, fig. 13.—'^ Friele, Norsk. L. Fersk. Moll., 1853, 

 p. 54.—* VON Wahl, Suss. Biv. Liv., 1855, p. 122.— * Moquin-Tandon, Moll. 

 Terr, et Fl. Fr., II, 18.55, p. 558, pi. XLV, figs. 1, 2. — "Jeffreys, Brit. Conch., 

 I, 1862, p. 43.—* SCHRENCK, Reis. nnd Forsch. Am. L,, II, 1867, p. 721.— 

 Brot, Etude Nay. Lem., 1867, p. 38, pi. iii, fig. 4; v, fig. 2; vi, figs. 1-3; vii, 

 figs. 1-3. — * Lehman, Die Schneck., 1873, p. 303. — * Westerlund, Faun. S. N. 

 and D., 1873, p. 587.—* Clessix, Conch. Cab. Ano., 1876, p. 83, pi. xiv, figs. 3, 4 ; 

 XXVI, figs. 1, 2. — *L. Adams, Coll. Man., 1884, p. 21, pi. ii, tig. 2. — "P^tel, 

 Conch. Sam., Ill, 1890, p. 176.—* Westerlund, Faun. Pal., II, Pt. 7, 1890, 

 p. 225.— * Locard, Coq. de Fr., 1893, p. 275. 



*Anodon anaiina Catlow and Reeve, Conch. Nom., 1845, p. 66. 

 'nodonta com^ia«a<a Rossmassler, ' Icon., I, 1835, p. 112, pi. iii, fig. 68, IV, p. 24, 

 pi. XX, fig. 283.— SCHOLZ, Schleis. L. und W. Moll., 1843, p. 123. — * Kuster, 

 Conch. Cab. Ano., 1853, p. 12, pi. iii, figs. 2, 3.—* Drouet, Nay. Fr., 1854, p. 8, 

 pi. VII, fig. 1.—* Moquin-Tandon, Moll. Terr, et Fluv. Fr., II, 1855, p. 560, 

 pi. XLV, figs. 3,4. — * von Wahl, Arch, fiir Nat. Kund. Liv.,2d8er., I, p. 115.— 



* Westerlund, Faun. S. N. & D., 1873, p. 586.— * Clessin, Nach. Mai. Ges., 

 1874, p. 85;'^ Deuts. Ex. Moll., 1876, p. 446, fig. 292.— *Kobelt, Icon., VI, 1879, 

 p. 44, pi. CLXV, fig. 1650-1654.—* Drouet, Mem. Ac. Dij., VII, 1882, p. 24 (re- 

 print).-* Westerlund, Faun. Pal., II, Pt. 7, 1890, p. 301.— * P^tel, Conch. 

 Sam., Ill, 1890, p. 178. 



*Anodon complanatus Sowerby, Conch. Icon., XVII, 1867, pi. ix, fig. 21 



tANODONTA CYGNEA var. PONDEROSA C. Pfeiffer. 



"Anodonta ponderosa C. Pfeiffer, Deuts. L. und S. Moll., 1825, Pt. 2, p. 31, pi. iv, 

 figs. 1-6.— * Waardenberg, Com. Hist. Nat. An., 1827, p. 37.— * Kleeberg, 

 Moll. Bor., 1828, p. 37.—* Rossmassler, Icon., IV, 1836, p. 24, pi. xx, fig. 282.— 

 Porro, Mai. Como., 1838, p. 112.—* Hanley, Biv. Shells, 1843,p. 216.— Scholz, 



'Credited to Ziegler Museum by Rossmassler. It was published under the name 

 Anodonta compressa in Menke's Synopsis, 1831, but not described. 



'^According to Clessin in this paper this is the only European species distinct from 

 4. cygnea, 



