1920.] NATURAL SCIENCES OF PHILADELPHIA. 375 



would probably add another whorl; I think it is possibly not full- 

 grown; but I cannot identify it with any of the species hitherto 

 described. 



CJECIDM. 



In the Challenger Report, de Folin records C. sepimentum de Fol., 

 C. crystallinum de Fol., and Strehloceras suhannulatum de Fol. from 

 Honolulu. Subsequently he added Meioceras sandwichensis de Fol. 



C. sepimentum has been taken at Hilo, Hawaii, by Thaanum, 

 abundantly at Mokapu Point, Oahu, by Bryan, and at Moomomi, 

 Molokai by myself. S. suban7iulatu'm also occurs at Mokapu Point. 



Csecum oahuense n. sp. 



The shell is similar to C, sepimentum in form. It has an evenly 

 convex septum. The aperture is moderately contracted. Sculp- 

 ture of 40 rounded rings, hardly as wide as their intervals, and much 

 smaller than those of C. sepimentum. 



Length 2.2, diameter at septum 0.38, at aperture 0.5 mm. 



Mokapu Point, Oahu. 



Fossarus ecphora n. sp. 



The shell is umbilicate, white with a dark brown embryonic 

 whorl. Sculptm-e of three very prominent spiral ridges and one or 

 two minor ones on the last whorl, the upper one appearing on earlier 

 whorls, the rest of the sm-face having fine spiral threads and axial 

 striae. Spire shorter and ridges stronger than in F. lamellosus 

 Montr. 



Altitude 2.3, diameter 2.5 mm. 



Haleiwa, Oahu, Pilsbry, 1913. 



This is evidently not the young of F. garrettii Pse., which has been 

 taken at Hilo, Hawaii and Koko Head, Oahu. 



F. multicostata Pse., has been found at Waikiki and Kaneohe Bay, 

 Oahu. 

 Epitonimndecussatum (Pease). 



Not an uncommon species. Dr. Dall informs me that the name 

 is pre-occupied. 



Epitonium kanemoe n. sp. Fig. 11 b. 



It is very slender, imperforate, white, with sculpture of slender, 

 recurved ribs, 8 on the last whorl, the intervals having minute axial 

 striae and coarser, more spaced spiral threads. Whorls not quite 

 in contact except at the ribs. 



