13 



lowish, shaded with brown, so as to appear as if scorched ; spire 

 acute, having as many as eight convex somewhat angular whorls, 

 which are girdled with elevated threads, and have about eight vari- 

 cose folds on each whorl disappearing on the last half of the anterior 

 whorl : suture deep, to which the upper part of each whorl gradu- 

 ally slopes. Aperture quite small, nearly semicircular, furrowed 

 within ; beak nearly straight, and with a very narrow channel. 



Length one and three fourths of an inch ; diameter three fourths 

 of an inch. 



From Mazatlan. Lieut. Green. 



The only described species to which it bears any resemblance 

 are F. marmoratus, Phil, from Australia, which is twice as long, 

 more numerously ribbed, mottled in coloring, and with the whorls 

 more angular ; and jP. rostratus, from the Mediterranean, which is 

 smaller, and has remarkably rounded whorls with the folds extend- 

 ing to the suture. 



ERATO LEUCOPH^EA (PI. XIV. Fig. 20.) 



T. obovata. solida, subfusca, valde callosa. callo et basi eburncis ; anfr. ad 

 4 subangulatis, ultimo superne tabulate ; apertura angusta, labro antice exca- 

 vato, continue denticulate. 



Shell obovate, solid, polished, of a livid drab color, the lip and 

 face ivory white. Whorls four or five, forming a low conical spire, 

 the outer whorl angularly rounded above ; lip thick, rising poste- 

 riorly somewhat above the body of the shell, slightly excavated ante- 

 riorly, and its inner margin very delicately toothed ; columellar 

 margin still more delicately toothed, with a conspicuous fold ante- 

 riorly. 



Length one fourth of an inch ; breadth one fifth of an inch. 



Inhabits Santa Barbara. Col. Jewett. 



Very closely resembling E. callosa, Adams (Voy. of Samarang) 

 differing chiefly in color, and the more delicate denticulations of the 

 aperture. 



CONUS RAVUS (PI. XIV. Fig. 21.) 



T. solida, ovoideo-conica, bulbosa, spiraliter argute striata et antice liris ele- 

 vatis alternis majoribus instructa. fulvida, epidermide fuscescente induta; spira 



