ADEORBIS. Panama Shells. 183 



Habitat. Panama ; C. B. A. ! 

 1 specimen was found in the sand. 



256. Litiopa (?) axicola. Nov. sp. 



Shell long ovate conic : pale horn color, sub transparent : sur- 

 face covered with deep regular crowded spiral strias ; apex 

 acute : spire with the outlines slightly curvilinear : whorls five, 

 convex, with a well impressed suture ; last whorl rather ventri- 

 cose : aperture broadly ovate, acute above : labrum thin : labium 

 with a distinct deposit : umbilicus wanting. 



Mean divergence about 45 ; length .14 inch ; breadth .075 

 inch ; length of spire .07 inch. 



The generic character of this species is doubtful. The shell 

 has the appearance of a Litiopa, but the station is that of Cingula, 

 to which Dr. Gould is inclined to refer it. We leave it doubtful, 

 until the soft parts shall have been examined. 



Station. Under stones at low water mark. 



Habitat. Panama ; C. B. A. ! 



7 specimens were found on the reef. 



257. Adeorbis (!) abjecta, Nov. sp. 



Shell subglobular : sometimes wholly of a yellowish white or 

 wholly of a dingy black, or partly of each color : with several 

 stout spiral raised lines and more or less distinct intermediate 

 striae on the upper part of the whorls : apex subacute : spire 

 small, much eroded in mature shells : whorls three or more, con- 

 vex, with a distinct suture ; last whorl ventricose : aperture 

 effuse, nearly semicircular, the inner lip being straight : umbili- 

 cus small. 



Mean divergence about 110 ; length .1 inch ; breadth .09 

 inch ; length of spire .045 inch. 



A. scaber Phil., from Panama, is described as having sublam- 

 ellar stria? of growth and an acute periphery of the last whorl. 

 Our shell resembles Littorina porcata Phil, of the Gallapago Is. 



