Explanation of Plate 13 



Fig. 1. — Beringius stimpsoni forma malleatus Dall from 125 feet, a specimen that is 4-sided 



in the last whorls. 

 Fig. 2. — Beringius stimpsoni (Gould) from 522 feet, a specimen that is 6-sided in the Last 



whorl. 

 Figs. 3-5.— Pyrulofusus deformis (Reeve) from 438, 120 (Sept. 15, 1948), and 130 feet 



(Sept. 15, 1948), respectively. The external lips of 4 and 5 are broken near the canal. 

 IMagnificatiox: All X .71. 



