TELLINA MERA. 



SPECIFIC CHARACTER. 



Ovate-orbicular, transversely striated, hinge anterior 

 to the middle, bidentate, with a lateral tooth in one valve. 



DESCRIPTION. 



Shell small, thin, white, not very convex, somewhat 

 regularly striated transversely; beaks forming a rather 

 prominent angle; anterior side with an obvious undula- 

 tion, and rectilinear as far as double the length of the 

 ligament; at tip rounded; ligament rufous; posterior side 

 nearly rectilinear half the distance from the beaks to the 

 middle of the tip, which is regularly and obtusely round- 

 ed; basal margin obtusely and regularly arquated; hinge 

 with two primary teeth in each valve; posterior tooth 

 small and triangular; anterior tooth thicker, obtuse, and 

 with an impressed line on its summit; a single prominent 

 lateral triangular tooth in the left valve; sinus of the 

 palleal impression remarkably large, in its posterior cur- 

 vature almost confluent with the tip of the muscular 

 impression. 



OBSERVATIONS. 



Inhabits the coast of South Carolina. — Dr. Ravcncl. 

 In a particular light it has a slight appearance of lon- 



gitudinal lines. 



PI. 64— Fi<r. 2. 



