38 SHELLS OF SOUTH AMERICA. 
334. VoLuta Fesviva, Lamk., d Orb. Voy. v. 426. B.M. 
Patagonia to Maghellan Siraiis. 
This is Voluia Becki, Brod. 
335. VoLurTA TUBERCULATA, Gray, d’Orb.Voy. v. 426. B.M. 
Patagonia to Maghcellan Straits. 
Voluia Mageliawea, V. fesiive and V. iuberculata appear 
to be varictics of the same spccics, difering m the nodulous- 
ness of the whoils aad the length of the spive. They differ 
from V. aucilla in being shorter and more ventricose and of a 
thicker consisicuce. The youager specimens of V. ancilla are 
generally rather th'n, but sometimes the older ones are very 
heavy and solid. V. Gechkez, Broderip, is only a large specimen 
of V. fesiiva of d’Orbigny: there 1s a specimen of the same size 
in the colicction from Patagoina. This species is nearly as large 
as V. magnifica, aad like it an mababitant of the colder regions. 
336. Mirra Mauaza, Grod., d’ Orb. Voy. v. 427. t. 6. 
1.9510, B.M. 
Arica. 
337. Mirra Inca, d’Orb. Voy. v. 427. t. 77. £. 1. B.M. 
Peru ; Pavia. 
338. CANCELLARIA TUBERCULOSA, Sow., d’Orb. Voy. 
vy. 427. t. 60. f. 11. B.M. 
Peru. 
339. CANCELLARIA CASSIDIFORMIS, Sow., d’Orb.Voy. 
v. 428. B.M. 
Peru; Payta. 
340. CANCELLARIA BUCCINOIDES, Sow., d’Orb. Voy. 
v. 428. B.M. 
Callao. 
341. CANCELLARIA CHRYSOSTOMA, Sow., d’Orb. Voy. 
v. 425. B.M. 
Peru; Payta. 
