﻿ANODONTA 42? 



Anodonta healei Lka, Pr. Ac. N. Sci. Phila., VII, 1863, p. 194; 

 Jl. Ac. N. Sci. Phila., VI, 1866, p. 26, pi. ix, fig. 25; Obs., 

 XI, 1867, p. 30, pi. IX, fig. 25.— Clessin, Conch. Cab. Ano., 

 1874, p. 132, pi. xi.iv, figs. 5. 6.— Simpson, Syn., 1900, p. 



644. 

 Margaron (Anodonta) healei Lea, Syn., 1870, p. 81. 



An elongated, subcylinclrical form with shining, ashy-brown 

 epidermis, which is banded and has dark rays on the posterior 

 slope. It may be only a variety of A. grand is, but the two 

 shells I have seen seem distinct. 

 Anodonta texasensis Lea. 



Shell irregularly obovate, thin, subinfiated, with full, high 

 beaks having doubly-looped sculpture, with a well-developed 

 posterior ridge that ends behind in a blunt point on the me- 

 dian line; anterior end somewhat narrowed and rounded; base 

 rounded and considerably produced just behind the middle; 

 dorsal wing low ; epidermis smooth, pale yellow, tinted brown- 

 ish, obscurely rayed ; nacre bluish-white, iridescent. 

 Length 52, height 30, diam. 19 mm. 

 Type locality, Texas. 

 Anodonta texasensis Lea, Pr. Ac. X. Sci. Phila., Ill, 1859, p. 

 113; Jl. Ac. X. Sci. Phila.. IV, i860, p. 366, pi. EXiii, fig. 

 191 ; Obs. VIlI, i860, p. 48, pi. i.xiii, fig. 191. — Ceessin, 

 Conch. Cab. Ano.. 1873, p. 109. pi. xxxiii, figs. 7, 8.— 

 Simpson, Syn., 1900, p. 645. 

 Anodon texasensis Sowerhy, Conch. Icon , XVII, 1870, pi. 



xxxvi, fig. 146. 

 Margaron (Anodonta) texasensis Li;.\, Syn., 1870, p. 81. 



.\ species of which I have only seen the type, a young shell 

 now so broken that little can be made out from it. It may be 

 the young of some other species. It is decidedly produced 

 just behind the center of the base. Possibly a young bealei. 



Anodont.\ DANiEi.sii Lea. 



Shell oblong, subrhomboid, subcompressed. thin, with beaks 

 rising above the outlines of the shell, having doubly-looped 

 sculpture ; posterior ridge low, double, ending in a wide bian- 



