196 CYPB^lA. 



sprinkled over the surface ; the marginal spots are nearly obso- 

 lete, and the under side of both extremities is stained orange. 



Length, -6-1 inch. 



Ceylon, China. 



C. Boivini, Kiener (figs. 25, 26), is a milky-white variety with 

 white extremities, usually presenting a worn appearance. C. 

 Reentsi, Dunker (figs. 27, 28), is another form with the dorsal 

 surface lined transversely, and the extremities spotted with 

 reddish-brown ; it looks like a young shell. 



Group C. (Gaskoinia, Roberts.) Shell smooth, edentulate. 

 C. EDENTULA, Sowb. PL 19, figs. 29, 30. 



Shorter and more inflated than C. Algoensis, from which it is 

 distinguished by the absence of teeth. Length, 1 inch. 



Southern Africa. 



Group D. ( Cyproeovula, Gray.) Shell ribbed transversely. 

 C. ADAMSONT, Gray. PI. 19, figs. 32, 33. 



White, conspicuously blotched with orange-brown. 

 Length, -5--T inch. 



Philippines, I. Bourbon. 



C. CAPENSIS, Gray. PL 19, figs. 34, 35. 



Yellowish or reddish brown, deeply umbilicated, the ridges 

 extend over the base of the shell. Length, 1-1-4 inches. 



Cape of Good Hope. 



Group E. (Pustularia, Sum.) Shell pustulate or nodulous. T 



C. STAPHYLJEA, Linn. PL 20, figs. 39-44. 



Grayish to brownish, pustules whitish, small, numerous ; 

 extremities tipped with reddish brown, base dirty white to 

 brown, teeth extended across the base on each side. 



Length, '5-'9 inch. 



Indian and Pacific Oceans. 



Young shell usually brown, without pustules. C. interstincta, 

 Wood (figs. 42, 43, 44), is a whitish or brownish variety with 

 larger and less numerous pustules, which are sometimes partially 

 obsolete, the teeth are coarser, darker in color, and do not 

 always extend entirely across the base. 



