﻿434 ANODONTA 



Anodonta MiCA.NS ( Aiilhonv). 



Shell elliptical or ovate, scarcely inrtated, smooth, inequilat- 

 eral, thin ; beaks tlattened. scarcely raised above the dorsal 

 line with apparently few, if any. undulations; epidermis 

 smooth, brownish-olive, wrinkled or striate ; posterior ridge 

 low, (.louble, ending behind in a wide biangulation about on 

 the median line ; anterior muscle scars impressed ; nacre a 

 brownish-golden color over the whole interior and very irides- 

 cent. 



Length. 70. height 40, diam. 24 mm. 



Type locality, Texas. 

 Anodon micans Anthony, Am. Jl. Conch.. I, 1865. p. 162, pL 



XVI, fig. 1 . 

 Anodonta micans \\. H. Wkk.h'i. Check List. 1888. — Simpson, 



Syn., 1900, p. 647. 

 Margaron (Anodonta) micans Lka, Syn.. 1870, p. 78. 



I know nothing of this species aside from the description 

 and figure of its author. It resembles externally some speci- 

 mens of A. simpsoniana, but is more decidedly biangulate be- 

 hind, and has. according to the author, a much richer nacre. 



Anodonta lurulenta Morelet. 



Shell subrhomboid, slightly inequilateral, tliin, convex, with 

 a well-developed, though not high, dorsal wing, which ends 

 in an angle behind at the posterior truncation of the shell; 

 posterior ridge low, ending near the base behind in a rounded 

 point : beaks rather low but apparently sharp, their sculpture 

 not seen; anterior half of the .shell brilliant: posterior half 

 sublamellous ; color of epidermis green or olive; nacre blue, 

 iridescent. 



Length 53. height 31. diam. if) mm. 



Guatemala ; Yucatan. 

 Anodonta lurulenta Morki.kt. Test. Nov., Pt. t. 1829, p. 28. — 



Fischer and Crossf., Miss. Sci., H, 1894, p. 523. pi. exiv^ 



figs. 6, 6a. — Simpson, Syn.. 1900, p. 647. 



