NODULARIA 979 
Unio ceruleus Lua, Tr. Am. Phil. Soc., IV, 1831, p. 95, pl. 
Mii 25 Obs. ,°1834, p.105, pl xii, fig. 25. Haney; 
Biv. Shells, 1843, p. 194, pl. xx, fig. 49.—CHENU, III. Conch., 
1858, pl. xvi, figs. 3, 3a, 3b.—Kuster, Conch. Cab. Unio, 
1861, p. 228, pl. Lxxvit, fig. 4——Sowsrsy, Conch. Icon., 
XVI, 1866, pl. xt, fig. 230—HaAniey and THEOBALD, 
Conch. Ind., 1876, p. 6, pl. x11, figs. 3; 3c: 
Margarita (Unio) ceruleus Lea, Syn., 1836, p. 26; 1838, p. 20. 
Margaron (Unio) ceruleus LeA, Syn., 1852, p. 30; 1870, p. 47. 
Nodularia cerulea Simpson, Syn., 1900, p. STI. 
Umo gerbidont Kypoux, Guer. Mag., 1838, p. 9, pl. cxvm, 
figs. 2, 2a, 2b.—HANLry, and THEOBALD, Conch. Ind., 1876, 
pr Ompl science. 2: 
Unio humilis Lwa, Pr. Ac. N. Sci. Phila., VIII, 1856, p. 93; 
Ops-WVLeiss7-p, 16, pl. xxvt, figs 16, Ji Ac: N..Sct.’ Phila; 
III, 1858, p. 298, pl. xxvi, fig. Io. 
Margaron (Unio) humilis Lea, Syn., 1870, p. 32. 
Unio corrianus Kuster, Conch. Cab. Unio, 1861, p. 229, pl. 
LXVII, fig. 5. 
Unio leioma Brnson, Ann. and Mag., 1862, p. 192—HANLEy, 
and THEOBALD, Conch. Ind., 1876, p. 6, pl. xu, fig. 6. 
Umo pilatus Leaw@ePr Ac. N.Sci. Phila, X, 1866, p. 133; Jil. 
mes Ns oct Phila. Vij 186s. p. 281, pl.-xxxvin, fig: 95; 
Obs. XT, 1860; p: 47, pl. Xx xvill, fie. O5. 
Margaron (Unio) pilatus Lea, Syn., 1870, p. 47. 
Unio evitatus Lea, Pr. Ac. N. Sci. Phila., X, 1868, p: 133; 
Tie AG oN. cies bhilas) V1, 1868;.p..270, pl: xxxvinl, fig, 92); 
Oybs., 2ell, T8609, p- 20;.pl. xxxvi1, fig. 92. 
Margaron (Unio) evitatus Lea, Syn., 1870, p. 47. 
Unio trirostris Sowrrpy, Conch. Icon., XVI, 1868, pl. Lxv, fig. 
331. 
Unio andersonianus Nevit1, Jl. As. Soc. Beng., XLVI, 1877, 
p. 40; Researches Yun. Exp., 1877, p. goo, pl. Lxxx, figs. 8, 
2s 
Nodularia andersoniana Preston, Rec. Ind. Mus., VII, 1912, 
p. 291. 
