﻿ANODONTA 373 



The type has been sHghtly injured near the posterior base 

 and the outHne of the shell is here a little drawn in. It is a 

 rather short, rounded rhomboid shell, and seems to be quite 

 strongly sculptured. 



Anodonta x'escoiana Bourg"uignat. 



Shell irregularly elliptical, much inflated, thin, nearly equi- 

 lateral, witli large, full, rather high beaks; ligament large and 

 elevated ; posterior slope somewhat truncated, there being an 

 angle where it joins the dorsal line; posterior ridge low, end- 

 ing in a blunt point midway up from the base ; anterior end 

 and base rounded ; epidennis greenish-gray, the rest periods 

 often being plainly exhibited, sometimes faintly rayed ; nacre 

 bluish-white, iridescent. 



Length 95, height 62, diam. 50 mm. 



Length 86, height 56. diam. 45 mm. 



Asia Minor. 

 Anodonta vescoiana Bourguignat, Ann. Mai., H, 1857, P- 34' 



pi. I, figs, r, 2. — Ci.KSSiN, Conch. Cab. Ano., 1873, P- 100, pi. 



XXIX, figs. I, 2. — KoBELT, Icon., \^IL 1880, p. 83, pi. ccvii, 



fig. 2102. — SiMPSox. Syn., 1900, p. 628. 

 Mar^^aron (Anodonta) vescoiana 1^%a, Syn., 1870, p. 81. 

 Anodonta irscoiana var. mrsopotarnica Moltsson, Jl. de 



Conch., XXn, 1874. p. 51. — KoBEi.T, Icon., new ed.. XIX, 



1912, p. 36, pi. Dxxix, fig. 2732. 

 ? Anodonta schlcrflii Mousson. Jl. de Conch., XXII, 1847, P- 



f Anodonta sclilaflii Simpson, Syn., 1900, p. 648. 



A greatly inflated species with very large, full and high 

 beaks, which are placed only a little in front of the center of 

 the shell. 



Anodonta p.eringt.xna Middendorff. 



Shell elongated, irregularly ovate, being a little wider in 

 front, decidedly inequilateral, scarcely subsolid. with a low, 

 rounded posterior ridge ; beaks low and rather compressed, 

 hut the umbonal region below them is full, their sculpture con- 

 sisting of nearly straight bars, which run ahnost parallel with 



