46 DESCRIPTION OF NEW 



Hab. near Poland, Ohio. J. P. Kirtland, M.D. 



My Cabinet. 

 Cabinet of Dr Kirtland. 

 Cabinet of Mr Hyde. 

 Diam. 1*1, Length 1'4, Breadth 2*7 inches. 



Shell elliptical, transverse, inflated, very inequilateral, vt^ithin salmon 

 colour and usually very rough; substance of the shell thin; beaks 

 somewhat prominent and slightly undulated at the tip ; ligament ra- 

 ther short ; epidermis dark brown, sometimes with yellow bands ; an- 

 terior cicatrices confluent : posterior cicatrices confluent; dorsal cica- 

 trices indistinct ; cavity of the shell deep ; cavity of the beaks shallow ; 

 nacre bluish along the inferior margin, the interior being usually rough 

 and of a deep salmon colour. 



Remarks. — I am indebted to Dr Kirtland, of Poland, Ohio, for seve- 

 ral specimens of this singular Anodonta. It is remarkably character- 

 ized in the nacre by the rough or tuberculous deposit of a deep sal- 

 mon colour. In my specimens this roughness is exhibited most strong- 

 ly about the anterior cicatrices. In form it most resembles the A. 

 Ferussaciana (nobis), but is not quite so cylindrical, and differs alto- 

 gether in the interior. 



Anodonta Wardiana. Plate XIV. fig. 42. 



Testa elliptica, transversa, subinflala, inaquilalerali ; clivo umbomali rotundato ; valvulis 

 tenuibus ; natibus prominentibus, ad apices undulalis ; epidermide viridi, radiata; margari- 

 ta subcmrulea. 



Shell elliptical, transverse, somewhat inflated, inequilateral; umbonial slope round- 

 ed ; valves thin; beaks prominent, undulated at the tip ; epidermis green, rayed ; nacre 

 bluish. 



Hab. near Chilicothe, Ohio. J. C. Ward, M.D. 



My Cabinet. 



Cabinet of Dr Ward. 



Diam. 1-2, Length 1-7, Breadth 3 inches. 



