18 TORINIA. 



at the periphery and above the suture ; margin of umbilicus 

 slightly crenulated, umbilical wall with three spiral ribs. 



Alt. 13-18 mill. 



West Indies. 



T. Heberti, Desh. ; T. cyclostoma, Hanley ; T. cylindracea, 

 Dillwyn, are synonyms. 



T. CYCLOSTO.MA, Menke. PI. 5. fig. 83, 84. 



Sculpture as in T. cijlindrica ; color greenish black, with 

 interrupted white bands above the suture and on the periphery ; 

 umbilical wall with two or three spiral ribs. Alt. 13 mill. 



West Indies. 



T. dZthiops, Hanley, is a synonym. 



This species differs from the preceding in coloring, but is 

 perhaps only entitled to varietal rank. 



T. J^THIOPS, Menke. PL 5, figs. 85, 8G. 



Shell globose, conic ; whorls longitudinally sulcate, spirally 

 sulcate and ribbed, the three superior ribs the smallest ; color 

 greenish black with interrupted white bands above the suture, 

 on the periphery and on the rib below it, and a brownish white 

 band in the aperture ; umbilical wall with two spiral ribs. 



Alt. 10 mill. 



West Indies. 



Easily known by the globose shape, the banding, the two 

 ribs on the umbilical wall and the whitish band in the aperture. 



T. NUBILA, Menke. PI. 5, fig 86 a. 



Shell globose-conic; whorls eleven-ribbed, sulci punctate, 

 color whitish, the middle of the whorls with smoky brown spots ; 

 umbilicus moderate, umbilical wall with three or four spiral ribs. 



Alt. 10 mill. 



West Indies. 

 T. TROCIIOIDEA, Desh. PL 5, figs. 87, 88. 



Shell conic; whorls longitudinally striated, spirally sulcate 

 and ten-ribbed, rib at the periphery elevated, very strong, gran- 

 ular ; color grayish white ; margin of umbilicus crenulated, 

 umbilical wall with two spiral ribs. Alt. 20 mill. 



Manilla; Society Islands. 

 T. dealbala, Hinds, is a synonym. 



