NO. 1205. SYNOPSIS OF TITi: NAIADES— SIMPSOX. 697 



p. 195; "Biv. Shells, 1843, p. 195.— " Scholz, Schleis. L. and W. Moll., 

 1843, p. 133. — "* Bkowx, 111. Recent Conch., 1844, p. 82, pl.xxxi, figs. 3,3a, 

 4-6.— *DuPUY, Hist. Moll. Fr., 1852, p. 638, pi. xxv, figs. 14, 15.— ^Kuster, 

 Concli. Cab. Unio, 1854, p. 121, pi. xxxiii, figs. 4-7; xxxiv, figs. 1,2. — 

 "VOX Wahl, Suss. Biv. Liv., 1855, p. 96. — * Moquin-Taxdon, MolL Terr, et 

 Flnv. Fr., II, 1855, p. 571, pi. xlix, figs. 7, 8. — *Drouet, Nay. Fr., II, 1857, 

 p. 79, pi. VI, fig. 1.— *H. and A. Adams, Gen. Eec. Moll., II, 1857, p.493.— 

 *BiELZ, Faun. Sieheu, 1863, p. 193. — *Boukguignat, Mai. Alg., 1864, p. 286, 

 pi. XIX, fig. 9; XX, tigs. 1-4. — ''Sowerby, Conch. Icon., XVI, 1866, pi. xlii, 

 fig. 234.—" Bkot, Coq. Fani. Nay. Lemau, 1867, p. 49, pi. ix, figs. 1-5.—* Ko- 

 BELT, Faun. Nass. Moll., 1871, p. 242. — * Lehman, Die Schnecken, 1873, p. 

 295.— *Clessin, Deutsche Ex. Moll., 1876, p. 463, fig. 302.— "Drouet, Mem. 

 Acad. Dijon, VII, 1882, p. 18 (reprint).— " Clessin, Moll. Oest., 1887, p. 

 741.—" Westerlund, Faun. Pal., II, Pt. 7, 1890, p. 74.—* P.etel, Conch. 

 Sam., Ill, 1890, p. 145. — *Locard, Coq. de Fr., 1893, p. 167. — * Westerlund, 

 Act. Soc. F. and F. F., XIII, No. 7, 1897, p. 162. 



^Margarita ( Unio) batavus Lea, Syn., 1836, p. 26; 1838, p. 20. 



^Margaron (Unio) hatavus Lea, Syn., 1852, p. 30; 1870, p. 47. 



^Unio batavi var. ? Eossmasslee, Icon., V and VI, 1837, p. 55, pi. xxix, fig. 410. 



* ZJwio. imnits DuPUY, Hist. Moll. Fr., 1852, p. 640, pi. xxv, fig. 16. — *Kobelt, 



Icon., VI, 1879, p. 42, pi. clxii, figs. 1642, 1643.— * Locard, Coq. de Fr.,1893, 



p. 154, fig. 168. 

 *Unio riparia C. Peeiffek, Nat. L. and S. Moll., 1821, Pt. 1, p. 118, pi. v, tig, 



13.— * Kleeberg, Moll. Bor., 1828, p. 39. 

 "^ Unio ripai- ins Scholz, Schleis L. and W. Moll., 1843, p. 129. — * Westerlund, 



Faun. Pal., II, Pt. 7, 1890, p. 90.— *Locard, Coq. de Fr., 1893, p. 164. 



* ? Unio crassus Nilsson,i Hist. Moll. Svec, 1822, p. 108. — *Rossmassler, Icon., II, 



1835, p. 19, pi. VIII, figs. 126, 127'^; V and VI, 1837, p. 55, pi. xxxix,tig. 411.— 

 Moquin-Tandox, Moll. Terr, and Fluv. Fr., II, 1855, p. 570; III, pi. xlix, 

 figs. .3, 4. — *NoRDEXSKioLD aud Nylander, Fin. Moll., 1856, p. 84, pi. vi, 

 fig. 72. — *Drouet, Nay. Fr., II, 18-57, p. 76, pi. iv, fig. 2. — *Westerluxd, 

 Faun. Sw., N. and Den., 1873, p. 569.-^— * Locard, Coq. de Fr., 1893, p. 162, 

 fig. 176.— * Westerlund, Acta Soc. F. and F. F., XIII, No. 7, 1897, p. 159. 

 ~"Unio crassMs variety batavus Jordan, .lahrb. Deuts. Mai. Ges., VI, 1879, p. 307. 

 *Unio ater Nilsson. Hist. Moll. Svec, 1822, p. 107. — *Rossmassler, Icon., II, 

 1835, p. 23, pi. IX, fig. 133; VII and VIII, 1838, p. 41, XL, fig. 543.— *Scholz, 

 Schleis. L. and F. W. Moll., 1843, p. 131.—* Kuster, Conch. Cab. Unio, 1854, 

 p. 114, pi. XXI, figs.l, 2, 6; xxxii, figs. 1-4. — * Moquin-Tandon, Moll. 

 Terr, et Fluv. Fr., II, 1855, p. 570, pi. xlix, figs. 5, 6. — *Drouet, Nay. Fr., 

 II, 1857, p. 72, pi. IV, fig. 1; Mem. Acad. Dijon, VII, 1882, p. 14 (reprint).— 

 "Westerlund, Faun. Pal., II, Pt. 7, 1890, p. 65. — *P^tel, Conch. Sam., Ill, 

 1890, p. 145.— *Locard, Coq. de Fr., 1893, p. 176. — "Westerlund, Act. Soc. 

 F. aud F. F., XIII, No. 7, 1897, p. 160. 



* Unio atra Deshayes, Encyc. Meth., II, 1830, p. 582. 



Unio rugatas Menke, Syn. Moll., 1828, p. 90. — *Kossmassler, Icon., V and VI, 

 1837, p. 65, pi. XXIX, fig. 415. 

 ■ ""Unio elongaia Michaud, Comp. Hist. Moll. Fr., 1831, p. 113, pi. xvi, fig. 29. 

 ■*Unio labacensis Rossmassler, Icon., II, 1835, p. 21. 



1 Nilsson claims that this is Retzius" species, and that it is found in the rivers of 

 Sweden. His Latin description is so brief that nothing can be made out of it. I 

 have no doubt that he had Unio batavus before him vs'hen he wrote it. 



-I believe that this is a rather large batavus and the figures are almost exactly like 

 those he gives of that species. 



^'Claimed to be crassns of Retzius, but he gives U, ater of Nilsson as one variety 

 and batavns Lamarck as another. 



