194 CYPPUEA. 



inflated, the colors are paler, there is an absence of the pittings, 

 and a partial obliteration of the callosities. Length, 1/9 inches. 

 By an error of the printer, the illustration of (7. ingloria is 

 marked f natural size these figures should have been placed 

 beside C. Aubreyana. 



C. HELVOLA, Linn. PL 19, figs. 8, 9. 



Pale bluish or olive-brown, ornamented with white and brown 

 spots, sides and base saffron-red, color darker above the edge ; 

 extremities violet ; teeth strong, partially elongated across the 

 base. Length, '55-1 *1 inches. 



Indian and Pacific Oceans. 



Specimens from Mauritius are very deep in color, and the 

 extremities are rich purple, while those from the Sandwich 

 Islands are often pale yellow, faintly spotted, with a whitish base 

 and extremities. Young shell pale bluish, faintly banded, teeth 

 brownish. 



C. CITRINA, Gray. PL 19, figs. 10, 11. 



Differs from C. helvola in its more delicate coloring ; the dorsal 

 surface is uniformly olive-brown, and the extremities are deep 

 orange; teeth fine, numerous. Length, -75-1 inch. 



Ceylon ; Mauritius; N. W. Australia (Bailey). 



C. POLITA, Roberts. PL 19, figs. 12, 13. 



Creamy white, thickly covered with minute white spots, pit- 

 tings orange, particularly those on the extremities ; base ivory- 

 white, teeth small, more or less tinted with yellowish, those on 

 the columellar side confined to the aperture, except for a short 



distance from each end. Length, -55-1 inch. 



Sandwich Islands. 



Younger shell, bright citron ; when the last coating of enamel 

 is being deposited it has a half clouded appearance. Closely 

 allied to the following. 



C. SEMIPLOTA, Mighels. PL 19, figs. 37, 36, 31. 



Light brown with numerous minute white spots; base tumid, 



white, aperture yellowish, narrow. Length, -3-'4 inch. 



Oahu. 



Mr. Mighels described the immature shell as G. spadix (fig. 

 36). G. Ann&, Roberts (fig. 31), is a broad flattened variety, 



