208 CIIAROPA. 



a little obliquely flattened above, periphery very obsoletely 



angulated. Diam. 7-0 mill. 



Cuba. 



Section HAPLOTREMA, Ance}', 1881. 



S. DURANTI, Newcomb. PL 61 , figs. 10,11. 



Widely umbilicated, discoidal, thin, coarsely, roughly striate, 

 yellowish white, or light yellowish brown ; whorls 4, flattened, 

 the last not descending at the aperture, broadly excavated and 

 channeled below. Diam. 4 mill. 



San Francisco to Lower California. 



Section MORCHIA, Albers, 1860. 



S. CONCOLOR, Fer. PI. 61, figs. 12-14. 



Widely umbilicated, subdiscoidal, smooth, lightly striate, dark 

 chocolate-brown, strigate with lighter brown, suture linear; 

 whorls 4, rapidly increasing, the last is obliquely depressed 

 above, base more convex. Diam. 15-25 mill. 



Porto Rico, W. Indies. 



It is viviparous. 



S. BAUDONF, Petit. PI. 62, figs. 15, 16. 



Widely umbilicated, rather smooth, depressed, somewhat 

 shining, blackish olivaceous ; whorls 3 J, nearly plane above, the 

 last a little obliquely flattened. Diam. 15 mill. 



Guadeloupe and Dominica, W. I. 



Genus CHAROPA, Albers, 1860. 



C. SERICATULA, Pfr. PL 62, figs. IT, 18. 



Perforate, slightly closely ribbed-striate, grayish corneous, 

 with irregular radiating brownish markings ; whorls 4 J, scarcely 

 convex, subimpressed around the perforation. Diam. 4-5 mill. 



Port Jackson, Australia. 



C. BIRETRACTA, Mousson. PL 62, figs. 19, 20 



Scarcely perforate, acutely closely ribbed-striate, light ful- 

 vous, with a few darker lines ; whorls 5, moderately increasing, 

 rounded, with well-impressed suture, above a little impressed in 

 the middle, biarcuately striated. Diam. 5 mill. 



Woilongong, Sydney, Australia. 



