DALL. 
Fra. 1. 
Mitchell. 
— Mollusca and Brachiopoda. 
PLATE 9. 
Cephalopod beak, showing excavations made by Bathysciadium pacific" 
(circular) and Cocculina (ovoid) 4; p. 939. 
Polynices (Euspira) agujanus Dall; alt. 26.0 mm.; p. 334. 
Bathysciadium pacificum Dall, viewed from above; diameter of base 
5.0 mm.; p. 839, 
Pecten (Pseudamusium) neoceanicus Dall; alt. 12.0 mm ; p. 402, 
Epitonium (Sthenorhytis) turbinum Dall; basal view; diameter 28.0 mm. ; 
p. 917. 
The same, viewed from above, showing the decollation of the spire. 
Bathysciadium pacificum Dall, in profile, showing fringes of periostracum ; 
p. 339. 
Epitonium (Sthenorhytis) turbinum Dall, profile of decollate specimen ; dian" 
eter 28.0 mm. ; p. 317. 
Figure 4 was drawn by the late Dr. J. C. McConnell, the others by Miss Evelyn 
