﻿392 ANODONTA 



Anodon neivtoncnsis Sowukiiv, Conch. Icon , XVII, 18C7, pl. 



x\"ii, fig. 62. 

 Anodonta neivtonicnsis Tkoschki., Arch. fiir. Naturg., V, 



1839, p. 239. 

 .liiodon ncivioniaiia Ca'ii.ow and Ki-;icvi:, Conch. Norn., 1845, 



p. 67. 

 ? Anodon excurvata Du: K.w. Zool. of .\. Y., Moll., Tt. 5, 1843, 



p. 202, pi. XVII, fig. 233. 

 Anodonta housatonica Linsley, Am. Jl. Sci., 1845, p. zyj. 



This is as variable a shell as A. cataract a. It is usually more 

 solid than that species, though thin specimens occur, the nacre 

 is almost always thickened, often greatly so, in front, and in 

 nearly all cases it is darker in the cavities. These characters,^ 

 the rougher epidermis, the higher, more biangular posterior 

 ridge and the biangulation where it ends behind are moderately 

 constant and usually serve to distinguish it from that species. 



Anoix)nta hallenbeckii Lea. 



Shell oblong, subelliptical or subrhomboid, inflated, strong, 

 ine^iuilateral, with full beaks, which are elevated above the 

 hinge line, their sculi)ture not seen ; posterior ridge full, round- 

 ed, ending in a blunt or rounded point at or below the median 

 line; surface, more or less irregularly, concentrically ridged, 

 in some specimens decidedly so ; epidermis yellowish or tawny, 

 usually with green bands, often feebly rayed, especially on the 

 posterior slope, sometimes the green color predominates ; mus- 

 cle scars large, irregular ; nacre whitish, sometimes lurid in the 

 cavities. 



Length 186, height over all 93, diam. J2 mm. 



Length ()■/. height 55, diam. t^j mm. 



Georgia. 



Type locality, Uhaupce Creek, Macon Co.. Ga. 

 Anodonta hallcnbcckii Lka. Pr. Ac. N. Sci. Phila.. II, 1858. p. 



139; 11. Ac. N. Sci. Phila., IV, 1859. p. 232, pi. xxxii. fig. 



112; Obs., VII, 1859, p. 50. pi. xxxiT, fig. 112. — Ci.KSSiN, 



Conch. Cab. ,Ano., 1873, p. 95, pi. xxvni. figs. 3, 4. — Sow- 



Ki^i:v. Conch. Icon.. X\TI, 1869, pi. win, fig. 80. — Simpson^ 



Syn.. igoo. p. 634. 



