UNIO 653 
Unio sulcidens LAMARCK, An. sans Vert., VI, 1819, p. 77.— 
? DELESSERT, Rec. Coq. Lam., 1841, pl. x11, fig. 3.—CHENU, 
Ili. Conch., 1858, pl. x11, figs. 5, 5a. 
Unio virgimiana LAMARCK, An. sans Vert., VI, 1819, p. 79. 
Unio fluviatilis GREEN, Jl. Mac. Lyceum, 1827, p. 41. 
? Unio raveneli Conrad, New F. W. Shells, 1834, p. 39, pl. v1, 
fig. 4.—CuHENu, Bib. Conch., 1st ser., III, 1845, p. 9, pl. 111, 
fig. 8. 
Margarita (Unio) watereensis Lea, Syn., 1836, p. 31; 1838, 
p22. 
Macbiroe (Unio) watereensis Lea, Syn., 1852, p. 33; 1870, 
eee icone. H. and A. Apams, Gen. Rec. Moll., II, 1857, 
Pp. 493- 
Unio griffithianus Lea, Tr. Am. Phil. Soc., V, 1834, p. 103, 
pl. xv, fig. 46; Obs., I, 1834, p. 215, pl. xv, fig. 46—HANLeEy, 
31v. Shells, 1843, p. 199, pl. xx1u, fig. 28.—KustER, Conch. 
Cab. Unio, 1861, p. 208, pl. Lx1x, fig. 2—Sowerrsy, Conch. 
Icon., XVI, 1868, pl. U.XxxIx, fig. 449. 
Margarita (Unio) grifithianus Lea, Syn., 1836, p. 31; 1838, 
pe 22: 
Margaron (Unio) grifithianus Lea, Syn., 1852, p. 33; 1870, 
p52: 
Unio planilaterus CONRAD, Monog., XII (no date after 1838), 
p. 103, pl. Lv, fig. 1. 
Margaron (Unio) planilaterus Lea, Syn., 1870, p. 51. 
Umio rufusculus Les, Pt. Am. Phil. Soc., V, 1852, p. 252; Tr. 
Ag Phil Soc) XX, 1652hp. 250: pl. xav, fig. 7; Obs., V; 1852, 
p. 14, pl. xtv, fig. 7—Sowerpy, Conch. Icon., XVI, 1868, pl. 
Eerie hes 2377: 
Margaren (Unio) rufusculus LEA, Syn., 1852, p. 33; 1870, p. 
54- 
Mya rigida Woop, Ind. Test. Rev., 1856, p. 200, pl. 1, supp. 
Tee TO: 
Umo abbevillensis Ura, Pr. Ac. N. Sci. Phila., I, 1857, p. 84; 
jienc, IN SecePhila kV ,. aS5eaips ot, pi. V1, fig..34; :Obs., 
VI, 1858, p. 51, pl. vi, fig. 34. 
Margaron (Unio) abbevillensis Lea, Syn., 1870, p. 52. 
