CYPR^EA. 177 



tributed, the cinnamon tinge slightly deeper at the extremities, 

 base white ; teeth thick and faint purplish white. 



Length, 3 inches. 



Dampier's 7s., West Australia. 



This shell, which Dr. J. C. Cox has lately published under the 

 name C. Thatclieri, was fully described in the Annals and Mag. 

 Nat. Hist., xix, 1849, by Mr. G. B. Sowerby, notwithstanding 

 the statement in Thes. Conch, that " no publication strictly so- 

 called " of C venusta, " can now be proved." The species is very 

 rare. 



Group B. Shell sometimes nodose or tuberculated. 

 C. MUS, Linn. PL 10, figs. 41, 42, 43. 



Shell oval, marbled with olive-brown, especially near the sides, 

 which are but faintl} r margined ; dorsal line pale, and bordered 

 with brown spots, which are sometimes scattered over the dorsal 

 surface ; posterior extremity ornamented with a large brown 

 spot, base ash-brown, teeth brown, nearly obsolete on the* colu- 

 mella, which is stained dark brown. Length, 1'25-1'75 inches. 



Atlantic 0., Mediterranean. 



Fossil near Plaisantin. 



The name C. bicornis (fig. 43) lias been suggested for the 

 nodose examples. 



Young shell, ventricose, pale ash-brown, and longitudinally 

 peculiarly waved. 



C. LEUCOSTOMA, Gask. PI. 10, figs. 37, 38. 



Differs from C. mus in being more solid; the dorsal line is 

 branched, and the spots on the sides are more numerous and 

 distinct, the base is white and the teeth are nearly obsolete. 



Length, 2 inches. 



Mocha, Arabia. 



C. MONETA, Linn. PI. 10, fig. 40; PI. 11, figs. 51-54; PI. 23, figs. 



00-00. 



Color varying from white to deep yellow, back sometimes 

 encircled with a faint orange or red ring, margins very thick, 

 base tuberculated to smooth, teeth obtuse. 

 Length, -0-1 '5 inches. 



Maldive /s., Australia, Taheiti, Japan. 



