﻿40 i.AMi'Snjs 



Mara^arita ( Utiio ) occidcns Lea, Syn., 1836, p. 23; 1838, p. 38, 

 Margaron (IJnio) occidcns Lea, Syn., 1852, p. 26; 1870. p. 41. 

 Unto suh02'atu\s Lea, Tr. Am. Thil. Soc, IV, 1831, j). 118, pi. 

 XVIII, fig. 46; Obs., L 1834, p. 128, pi. XVIII, fig-. 46. — 

 Hanley, Biv. Shells, 1843, P- 184, pi. xxn, fig. 43. — Chenu, 

 111. Conch., 1858, pi. XII, figs. 6, 6a, 6b. — Sowerby, Conch. 

 Icon., XVI, 1866, 1)1. XXXI, fig. 163; 1868. pi. Kxxxv, fig. 



456. 

 Margarita (-Unio) subovatus Lea, Syn., 1836, p. 19; 1838. p. 



17- 

 Margaron (Unio) subovatus Lea, Syn.. 1852. p. 24; 1870. p. 



37- 

 Unio cardiunt Conrad, New F. W. Shells, 1834, p. 68. — Kus- 



TER, Conch. Cah. Unio, 1856, p. 169, pi. l. figs. 1-4. 

 Unio cardium Raf. v. ocddens VM'^v.h, Conch. Sam., IH, 1890,. 



p. 147. 

 Unio cardium Raf. v. i^entricosus IVivTel, Conch. Sam., III,. 



1890, p. 147. 

 Unio fasciohis Ferussac, Guer. Mag. 1835. \). 26. 

 Unio ovata Deshayes, An. sans Vert., 3d ed., 1839, p. 669. 

 Unio ovatus Kuster, Conch. Cab. Unio, 1852, p. 55, pi. xii, 



fig. I. 

 Unio Icnis Conrad, Monog., XII. 1840. p. 106, pi. lviii, fig. 2. 

 Unio canadensis Lea, Proc. Acad. N. Sci. Phila., I, 1857, p. 85 ; 



Jl. Ac. N. Sci. Phil., IV, i860, p. 268, pi. xuv, fig. 148; Obs.. 



VII, i860, p. 86, pi. XLiv, fig. 148. 

 Margaron {Unio) canadensis Lea, Syn., 1870. p. 2^7 • 

 Unio dolabrcrformis Sowekhy, Conch. Icon., XVI, 1867, pL 



Lix, p. 298. 

 Unio iatissinnis Soweri'.y ?, Conch. Icon., XVI, 1868, pi. lxvi, 



fiS- 337- 



I'arnes only gave outline figures of this species ; two of these 

 are of females and one is of a male shell. Lea's subo'i'atits is 

 a male and his occidcns is a bright colored form. One of his 

 figures of the last is of a female, the other is of a male. Lea's 

 U. canadensis appears to be a diseased or depauperate 7'cntri- 



