LEPTOTIIYRA. 255 



L. COELATA A. Ad., 1854. PL 48, fig. 38. 



Shell ovate-conoid, trochiform, thick, slightly elevated, below 

 subdepressed, umbilicate ; spire obtuse ; whorls 5-6, slightly convex, 

 longitudinally and obliquely striate, spirally granose-lirate ; suture 

 impressed ; last whorl obtusely angular at the middle, with 16-18 

 spiral granose lirae, the granules small, close; aperture transversely 

 ovate, silvery within; lip simple; columella narrow, arcuate, thick- 

 ened at the base ; umbilicus deep, with a spiral funicle inside ; co- 

 lor reddish yellow. Alt. 11, diam. 16 mill. 



Mogador ; E. coast Africa. 

 Operculum calcareous. 



This is the Oinphalius coelatus A. Ad., and the Turbo MacAn- 

 dreivi Morch, T. macandrei Sby. It is the type of Anadema A. Ad., 

 proposed as a subgenus of Oinphalius, and characterized by the 

 spiral funicle within the umbilicus. 



L. FRICKII Crosse, 1865. Unfigured. 



Shell narrowly umbilicated, depressed-turbinate, delphinuliform, 

 somewhat thick, spirally finely striate, bicostate, white, more or less 

 variegated with black ; suture subcrenulated ; whorls 4, (embryonic 

 11 smooth, white), rapidly increasing, subplane at sutures, the last 

 tri-costato-carinate, the costic articulated with white and black, 

 .slightly descending ; base somewhat convex, spirally granulose- 

 striiite; aperture round, white, scarcely pearly, the basal margin 

 thickened. Alt. 4, diam. 5 2 mill. 



Gulf of California. 



Var. beta is gray, obscurely maculated with black. 



L. EUCHARIS Crosse, 1865. Unfigured. 



Shell narrowly perforate, turbinate, delphinuliform, rather thick, 

 dirty white, spirally articulated with black and white, with longitu- 

 dinal very fine suboblique impressed stria3 and spiral costate, the 

 central rib prominent, forming a carina ; apex obtuse, subplanulate ; 

 whorls 4i, (embryonic H smooth, white, flat,) rapidly increasing, 

 convex, carinate, the last descending ; base slightly convex, concen- 

 trically costulate and finely radiately striate; aperture round, 

 white, scarcely pearly, basal margin rather wide, subthickened. 



Alt. 6J, diam. 02 mill. 



Habitat unknown. 



