GARRETT: CATALOGUE OF CYPR^ID^E. Ill 



Paumotu and Society Island shells I collected many years 

 ago. I believe Gray's type specimens were collected by Mr. 

 Cuming on the reefs at Raiatea, one of the latter group. 



15. C.(Aricia) caput-anguis, Phil. This common shell, which 

 is chiefly confined to the Sandwich Islands, is usually cited 

 as a variety of C. cafut-serpentis ; but is, I think, sufficiently 

 distinct to rank as a separate species. As compared with 

 the latter, it is generally smaller, darker colored, the sides 

 less dilated, and the dorsal spots not so large. 



The animal has a dark -brown mantle, varied with dark 

 green, and garnished with red or red and white, more or less 

 divided processes. The siphon is dusky-slate, tentacles brown 

 with white bases, and the foot dusky slate with a paler creep- 

 ing disk. 



16. C. (Aricia) caput-serpentis, Lin. Common on reefs at all 

 the groups, except the Sandwich Islands, where it is replaced 

 by the preceding species. Young shells are marked with a 

 conspicuous median brovm band. 



17. C. (Luponia) cruenta, Gmel. A very rare species, found 

 on the outer reefs at the Kingsmill and Caroline Islands. 



18. C. (Luponia) eburnea, Barnes. This elegant species, 

 which only occurred to our notice in the Viti Group, is 

 restricted to certain localities v/here it is not uncommon. 

 They were found between tijde marks on sandy-mud, having 

 no doubt come up from deep water to deposit their ova. 



19. C. (Luponia) erosa, I>in. Not uncommon at all the groups, 

 but did not observe it at any of the Marquesas Islands. 

 They are usually found under dead coral inside the reefs. 



The animal, when fully expanded, is really a beautiful 

 object. The mantle is cinereous, clouded with dusky, veined 

 with black and white, and ornamented with numerous simple 

 and branched processes of a greyish hue, annulated with 



