570 UNIO 
figs. 7, 8.—Drovet, Nay. Fr., I, 1857, p. 79, pl. vi, fig. 1.— 
30URGUIGNAT, Mal. Alg., 1864, p. 286, pls. x1x, fig. 9; xx, 
figs. I1-4.—Sowerby, Conch. Icon., XVI, 1866, pl. xii, fig. 
234.—Brot, Coq. Fam. Nay. Leman, 1867, p. 49, pl. 1x, figs. 
1-5.—Ciessin, Deutsche Ex. Moll., 1876, 463, fig. 302.— 
SIMPSON, Syn., 1900, p. 696. 
Margarita (Unio) batavus LEA, Syn., 1836, p. 26; 1838, p. 20. 
Margaron (Unio) batavus Lea, Syn., 1852, p. 30; 1870, p. 47. 
Unio batavi var. ? RossMASSLER, Icon., V and VI, 1837, p. 55, 
pla xix ties ATO: 
Unio riparia C. PFEIFFER, Nat. L. and $. Moll., 1821, pt. 1, p. 
11, .pleV, Ho. 13. 
Unio riparius ScHowz, Schleis L. and W. Moll., 1843, p. 129. 
Unio crassus Nitsson, Hist. Moll. Svec., 1882, p. 108.—Ross- 
MASSLER, Icon., [I, 1835, p. 19, pl. vri1, figs. 126, 127; V and 
VI, 1837, p. 55, XXXIX, fig. 411.—Mogui1n-Tanpon, Moll. 
Terr. and Fluy. Frc; lh 1855, \p: 570 alls pr sare shies oe 
—NoORDENSKIOLD and NyLANpkgR, Fin. Moll., 1856, p. 84, pl. 
vi, fig. 72.—Drovuet, Nay. Fr., I, 1857, p. 76, pl. iv, fig. 2. 
—lLocarp, Coq. de Fr., 1893, p. 162, fig. 176.—ORTMANN, 
Ann. Cara Minise Vell. Ione. 275- 
Unio crassus variety batavus JORDAN, Jahrb. Deuts. Mal. Ges., 
Vij 18705p-4307. 
Unio ater Nitsson, Hist. Moll. Svec., 1822, p. 107.—Ross- 
MASSELBRY Icon: IL) 18350 p4295 pl mx, foe 133. Vlleand 
VIII, 1838, p. 41, pl. xu, fig. 543.—Kuster, Conch. Cab. 
Unio, 1854, p. 114, pls. xx, figs. 1, 2, 6; xxxt1, figs. 1-4.— 
Moguin-Tanpon, Moll. Terr. et Fleuv. Fr., I], 1855, p. 570, 
pl. xix, figs. 5. 6—Drouer, Nay. Fr, 11, 1857, p. 72, pl 
TVs tion a 
Unio atra DrsHayes, Encyc. Meth., II, 1830, p. 582. 
Unio rugatus MENKr, Syn. Moll., 1828, p. 90.—ROSSMASSLER, 
Teon.s V and V1, 1837, p: 65, pl xmas fie 240s: 
Unio elongata Micnaup, Comp. Hist. Moll. Fr., 1831, p. 113, 
ple Xvi, Teo; 
Unio labacensis RossMAsstER, Icon., IT, 1835, p. 21. 
