252 PROCEEDINGS OF THE ACADEMY OF [1888. 



Amastra simularis, Nobis. PL XIII, fig. 7, 



Shell dextral, ovate conic, whorls 5i, slightly rounded, body whorl 

 somewhat inflated, two thirds the length, the first one and a half 

 composed of slightly curved plicse, suture lightly impressed, epiderm- 

 is dark brown with black zig-zagged lines and linear striae, body whorl 

 a dark red color beneath the epidermis, aperture semi-ovate, dark 

 red, columella straight, with a white twisted plait near the base, 



L. 15. W. 7. L. apt. 6. Diam. apt. 3 mill. 



Molokai. 



Obs. Received from D. D. Baldwin, Esq., and so called from its 

 size and resemblance to A. mucronata Newc. 



Melania abberans Brot ms. Nobis. Plate XIII, figs. 8, 8a. 



Shell solid, elongate, the last one fourth of the spire, rapidly taper- 

 ing to the acute apex, whorls 16 or more, horn color, with numerous 

 longitudinal plicae over the whole surface, which are decussated by 

 transverse lines giving it a granulated appearance, the base of the 

 plicae of the last whorl, are spinous, which are sometimes absent. 

 The surface of the shell between the plicae is smooth ; base spirally 

 striate ; aperture rounded ovate, white within ; a heavy callus de- 

 posit on the columella, which is incurved and twisted, opercle with 

 the polar point near the base. 



Length, 44 mill. 



Hab. Vati, New Hebrides. 



Obs. I have received a number of examples of this shell, from 

 Mr. E. L. Layard, under the name of Pirenopsis costata; Dr. Brot 

 informs me it is a true Melania in which I concur. It is nearly re- 

 lated to Mel. fastigiella, Reeve. Mons. Marie, a dealer in Paris, sent 

 it to Dr. Brot, some years ago, for identification, and he gave it the 

 provisional name of abberans ; these were obtained by Mons. Ross- 

 itie in the New Hebrides. It is now described and figured for the 

 first time. 



