TELLINA. Panama Sliells. 285 



pure white beaks ; within of a very deep red : shining ; with 

 deep crowded regular concentric sulci, which are of equal depth 

 at both extremities : beaks prominent : ligament short, conspi- 

 cuous: with a long posterior dorsal area well defined by an 

 angle: lateral teeth nearly obsolete. The difference between 

 this shell and T. punicea is slight : its farrows are deeper and 

 are continued over the flexure without change of depth ; the 

 interspaces are less flattened, and the lateral teeth are nearly 

 obsolete. 



Length 1.13 inch ; height .7 inch ; breadth .3 inch. 



Station. In sandy mud at 10 fathoms : Cuming ! Hanley. 



Habitat. Xipixapi ; Cuming ! Hanley. 



Panama ; C. B. A. 1 

 1 valve was found. 



472. Tellina sincera. 



Synonymy. 



Tellina sincera Hanley in Proc. Zool. Soc. Lond. p. 68. Apr. 1844. 



Hanley in Thes. Conch, p. 261. No. 70. 



pi. 60. f. 144. 1846. 



Station. Unknown. 



Habitat. N. W. Coast of America (Dr. Sinclair) ; Hanley in 



Thesaurus. 

 Panama ; C. B. A. ! 

 15 specimens were obtained on the beach west of the town. 



473. Tellina vicina. Nov. sp. 



Shell very short, subovate, solid, convex, subequilateral : 

 ventral margin well excurved, sometimes slightly incurved near 

 the flexure ; anterior margin broadly rounded ; anterior and 

 posterior dorsal margins nearly straight, sloping ; posterior 

 extremity subtruncated ; flexure moderate : dingy white, some- 

 times tinged with yellowish brown ; sometimes deep red, with 



