COLUMBELLA.— Plate XXXVI. 



Species 232. (Fig. «, b, Mus. Taylor.) 



iLi:MBELL.\ ALABASTEUM. Col. Usld fiwformi, mibpy- 

 ramidali, marmoreo-albd, prope suturas opacd, nuiculu 

 (•mta7iek distantibm sparsim notatd, anfractibus pla- 

 iiatis, uUimo ad basin contracto, conlorto et sitlcalo 

 n/ierturd parvd, labro varicoso. 



IK ALABASTER CoLUMBELLA. Shell fiisiforni, some 

 what pyramidal, marble-white, opaque next the su 

 tiires, sparingly marked with distant chestnut blotches, 

 whorls flattened, last whorl contracted at the base 

 twisted and grooved ; aperture small, lip varicose. 



ih ? 



The substance of this very interesting species lias the 



appearance of alabaster or white marble, a portion of whicli 

 is polished, while the rest is rough and opaque. 



%ld, iindi- 

 aperturd 



Species 233. (Mus. Taylor.) 



I COLUMBELLA PLUBISCLCATA. Col. testd Sub 

 I que spiraUter sulcata, anfractibus convfxit 



I parvd, labro superne subemarginato. 



] The many-grooved Columbella. Shell subulate, spi- 

 I rally grooved throughout, whorls convex ; aperture 



small, lip faintly notched at the upper part. 



Hab. ? 



Characteristically grooved throughout, but not included 

 in this genus without considerable doubt as to the correct- 

 ness of assigning it a place amongst the Columbella. 



