162 Panama Shells. LITTOBINID^. 



A variety (?,) is morei-alender, and has. the .ribs less pro- 

 minent. 



Station. — Unknown. 



... ^a6ttoi.-T-Panama ; C. B. A.! 



., 85 specimens were collected from the sand. 



214. CflBcniU'iaeve. Nov. sp. 



Shell well arcuated, rather stout, of nearly uniform diameter ; 

 white : smooth and shining : apex .very prominent. 

 Length .08 inch ; breadth .027 inch. 



Var. (?) minus is more slender, with the apex less prominent. 

 Length .062 inch ; breadth .02 inch. 



Station. — Unknown. 



: :.Hahitat.-r-r'PaM&vsx& ; C. B. A. ! 

 -i2 specuuens-wiere found, ^viz. 1 of each variety. 



L .. 10 , ii2i&u'. ^€«ecuia< laqueatuin. Nov. sp. 



Shell slender, moderately arcuated, with the diameter regu- 

 larly increasing : white : longitudinally furrowed with about 20 

 shallow somewhat unequal grooves : apex moderately promi- 

 nent, lateral. 



Length .11 inch ; breadth .028 inch. 



Station. — Unknown. 



Habitat. — Panama ; 0. B. A. I 

 2 specimens were obtained. 



216. Ccecum inonstrosum. Nov. sp. 



:. Shell well arcuated;. stout in the lower half and very slender 

 inthcupper. half, with, the transition abrupt, as if the effect of 

 an accident :, ivory white :, on the. upper .part with about 18 

 rather stout approximate moderately, prominent rings with flat 



