284 Panama Shells. TELLENID^:. 



Tellina rubescens Hanley in Sowb. Thes. Conch, p. 242. No. 



38. pi. 60. f. 153. 1846. 



Station. In sandy mud ; Cuming ! Hanley. 



Habitat. Panama and Tumbez ; Cuming ! Hanley. 



Tumbez ; Jay. " 



Panama ; C. B. A. ! 

 2 specimens were found. 



470. Tellina siliqua. Nov. sp. 



Shell elongate, subelliptic, very thin, very convex, very in- 

 equilateral ; ventral margin nearly straight ; anterior margin 

 well rounded ; anterior dorsal margin slightly excurved, mode- 

 rately sloping ; posterior dorsal margin straight or concave, 

 sloping to a small subtruncate posterior extremity; flexure 

 great : pure white : with excessively minute concentric striae : 

 beaks acute : ligament small : cardinal teeth small ; lateral teeth 

 wanting. Dr. Gould suggested the very appropriate name 

 which we have adopted. 



Length .7 inch ; height A inch ; breadth .3 inch. 



Station. Unknown. 



Habitat. Panama ; C. B. A. ! 

 1 specimen was found. 



471. Tellina simulans. Nov. sp. 



Synonymy. 

 Tellina punicca (pars) Hanley in Sowb. Thes. Conch. I. 239. 1846. 



Shell subovate, solid, moderately convex, nearly inequilate- 

 ral ; ventral margin slightly excurved ; anterior margin well 

 rounded ; anterior dorsal margin slightly excurved ; poste- 

 rior dorsal margin nearly straight, sloping ; posterior extremity 

 obliquely truncated ; flexure slight : white, more or less deeply 

 tinged with rose color except near the margin and around the 



