1917. 



NATURAL SCIENCES OF PHILADELPHIA. 



309 



MARINE MOLLUSKS OF HAWAII. IV-VII. 

 BY HENRY A. PILSBRY. 



Since the publication of the first paper of this series,' the writer 

 has been able to study part of the important collection of Hawaiian 

 marine shells made by Professor Wm. Alanson Bryan and Airs. 

 Bryan, which they had brought to the Academy for identification. 

 It is very rich in the shells of Kauai, Oahu and Molokai, also several 

 of the islets of the northwestern group as far as Laysan. The present 

 paper treats also of shells collected by Mr. D. Thaanum, minutise 

 picked out of shell-sand sent many years ago by Mr. Frederick 

 Stearns, and material collected by the author. 



IV. EULIMID^. 

 Melanella bryani n. sp. Fig. l. 



Laysan Island, Wm. Alanson Bryan, 1902. Type No. 117595, 

 A. N. S. P., paratypes in Bryan collection. 



The shell is obliquely conic, the upper half rather strongly curved 

 to the right and backward; smooth, white; the later whorls having 



Fig. 1. — Melanella bryani. 



Fig. 2. — Melanella mimus. 



a broad gray border below the suture, which is somewhat impressed. 

 A single series of well impressed linear varices runs up the right side, 

 receding to a dorsal position in the upper whorls. The whorls are 

 slightly convex. The aperture is small, subvertical. The columella 



^ Marine Mollusks of Hawaii, I-III, these Proceedings, pp. 207-230, August, 



1917. 



