PLEUROTOMA.— Plate XXXV. 



A solid shell characterized by a row of short blunt ribs 

 extending about half-way across the whorls from the suture. 



Species 323. (Mus. Metcalfe.) \ 



Pleurotoma geanicostata. Pleur. testa abbreviato-o- 

 vatd, basi truncatd, spird brevi, anfractibus pulcherri- 

 me granoso-costatis, liris transversis clathratis ; albidd, 

 roseo-fuscescente tinctd, grants saturatioribus. 



The grain-ribbed Pleurotoma. Shell shortly ovate, 

 truncated at the base, spire short, whorls very beau- 

 tifully grain-ribbed, latticed with transverse ridges ; 

 whitish, stained with pinkish brown, grains of a dar- 

 ker tin<re. 



Species 324. (Mus. Taylor.) 



Pleurotoma Molleri. Pleur. testa ovatd, ienui, an- 

 fractibus siiperne peculiariter depresso-angulatk, lon- 

 gitudinaliter creberrime plicatis ; sordide albd. 



Moller's Pleurotoma. Shell ovate, thin, whorls pecu- 

 liarly depressly angulated round the upper part, lon- 

 gitudinally very closely plicated ; dirty white. 



Befrancia lactea, Moller. 

 Hob. Greenland. 



The name lactea being pre-occupied in reference to this 

 genus, I dedicate the species to the eminent author of the 

 Mollusca of Greenland whose loss the scientific world have 

 so recently had occasion to deplore. 



Species 325. (Mus. Cuming.) 

 (Natural size.) 



Pleurotoma Lymn^mformis. Pleur. testa ovatd, tenui, 

 ■injlatd,-striis lougitudinalibus et transversis, creberrimi 

 reticulata, aperturd ampld, sinu lato ; alba, aurantio- 

 fusco tinctd et maculatd. 



The Lymn^ea-shaped Pleurotoma. Shell ovate, thin, 

 inflated, very closely reticulated with transverse and 

 longitudinal striae ; aperture large, sinus broad, white, 

 stained and spotted with orange-brown. 



Kiener, Icon. Coq. vivantes, Pleurotoma?. 62. pi. 22. f. 3. 



Hob. Philippine Islands ; Cuming. 



This is the nearest approach of any shell I have to M. 

 Kiener's P. Lynmceaformis. 



