﻿ANODONTA 397 



Anodonta Itenryiana Lea, Pr. Ac. N. Sci. Pliila., 1, 1857, [). 



102. 

 Anodonta lienryana Lea, Jl. Ac. N. Sci. Phila., IV, i860, p. 



373, pi. Lxvi, fig. 198; Obs., Vin, i860, p. 55, pi. LXVI, fig. 



198. — Clessin, Conch. Cab. Ano., 1874, p. 141, pi. xlv, figs. 



5, 6. — Simpson, Syn., 1900, p. 635. 

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

 Anodon henryana Sovvekby, Conch. Icon., XVII, 1870, pi. 



XXXIV, fig. 140.0 



Very close to A. itnbecillis and probably only a southwest- 

 ern variety of it, as there are intermediate specimens, which 

 are very hard to place. It is normally a little higher in pro- 

 portion than that species, the posterior point is more blunt, 

 and perhaps a little lower, and the young shells are paler and 

 rougher. 



Anodonta crnnosA Say. 



Shell thin to strong, ovate or elliptical, inflated, ending be- 

 hind in a blunt point about at the median line ; beaks low and 

 compressed in the young shells, fuller and higher in adult 

 specimens, their sculpture several irregular, feeble, somewhat 

 doubly-looped ridges ; surface usually smooth above, but hav- 

 ing strong growth lines on the border ; epidermis ashy, yellow- 

 ish-ashy or greenish-ash, with delicate, often wavy rays: two 

 or three of these on the posterior slope are wide and dark : beak 

 cavities capacious in old shells ; nacre bluish or greenish in 

 young shells, often becoming purplish in the adult state. 



Length 05, height 53, diam. 42 mm. 



South Carolina to Florida. 



Type locality, South Carolina. 

 Anodonta gibbosa Say. Exp. to St. Peters R., 1824. p. 265, pi. 



XIV, figs. 3. 4. — Clessin, Conch. Cab. Ano., 1873. p. 74, pi. 



xvTTi. fig. 3. — Simpson, Syn., 1900, p. 635. 

 Margarita (Anodonta) gibbosa Lea, Syn.. 1838. p. 31. 

 Anodon gibbosa Cati.ow and Reeve, Conch. Nom., 1845, P- ^V- 



