WEST AMERICAN SHELLS 
D. vallicolens, Raymond, Nautilus XVII, p. 
123. 
D. watsom, S. & P., Tryon, Man. Conch. 
D. dalli, 8. & P., Tryon, Man. Conch. 
Genus, Cadulus, Philippi 
C.. nitentior, Cpr., Nautilus XVII, p. 108. 
C. fusiformis, Pilsbry & Sharp, Nautilus 
Xp. 72 > 28: 
C. aberrans, Whiteaves, Nautilus IV, p. 36; 
EX Oe teas 
C. quadrifissatus, Cpr., Nautilus XIII, p. 29. 
C. hepburm, Dall, B. C. Bull. 2, p. 12. 
C. tolmiet, Dall, B. C. Bull. 2, p. 13. 
C. californcus, Pilsbry & Sharp, Man. 
Conch. 
Class, GASTEROPODA 
Sub-class, ANISOPLEURA 
Order, preRopopa 
Family, CAVOLINIIDAER 
Genus, cavolina, Abildgaard 
C.. tridentata, Forsk, U.S. N. M. XV, p. 194. 
C. pacifica, Dall, Nautilus X VIII, p. 19. 
Genus, cleodora, Péron & Lesueur 
C. pyramidata, Péron, dredged off Catalina 
Island, teste Oldroyd. 
Genus, corona, Dall 
C. spectabilis, Wall, U.S. N: M. XV, pe i192. 
Family, PNEUMODERMATIDAE 
Genus, pneumodermon, Cuvier 
P. pacificum, Dall, U.S. N. M. XV, p. 194. 
Order, opisTHOBRANCHIATA 
