PLEUROTOMA.— Plate XXXIX. 



Species 265. 



Pleurotoma obesicostata. Pleur. testa, snbobeso-fusi- 

 formi, anfractibus angulatis, longitudinaliter costatis, 

 costis obesis, transversim subtiliter liratis, canali brevis- 

 simo, truncato, sinu conspicuo ; fused. 



The stout-ribbed Pleurotoma. Shell obesely fusi- 

 form, whorls angulated, longitudinally ribbed, ribs 

 stout, transversely finely ridged, canal very short, 

 truncated, sinus conspicuous ; brown. 



Hab. West Indies. 



The ribs appear to be of an unusually broad character. 



Species 280. 



Pleurotoma lasueata. Pleur. testa ovato-turritd, 

 anfractibus angulatis, longitudinaliter costatis, costis 

 obesis, remotiusculis, interstitiis striatis ; canali trun- 

 cato ; aperturd brevi ; sordide albidd. 



The fluted Pleurotoma. Shell ovately turreted, whorls 

 angulated, longitudinally ribbed, ribs stout, rather 

 remote, interstices striated; canal truncated; aper- 

 ture short ; dull white. 



Hab. West Indies. 



The sinus is not very distinct, but sufficiently so to en- 

 title it to a place in the genus under consideration. 



Species 295. 



Pleurotoma Turbinelloides. Pleur. testa obeso-im 

 uirinque attenuatd, anfractibus rotundatis, longiti 

 naliter costatis; canali subelongato, sinulato ; albica 

 lineis nigricantihis binis cingulatd. 



The Turbinella-like Pleurotoma. Shell stoi 

 ovate, attenuated at both ends, whorls round 

 longitudinally ribbed ; canal a little elongated, sii 

 broad ; whitish, encircled with blackish lines in pa 



Sab. West Indies. 



Peculiar in form, and very characteristically marked. 



Species 321. 



Pleurotoma rubric ata. Pleur. testa ovatd, spird am 

 lato-acuminatd, longitudmaliter costatd, costis re.- 

 tiusculis, interstitm striatis ; canali brevissimo, trun 

 to; rubidd. 



The brick-red Pleurotoma. Shell ovate, spire anji 

 larly acuminated, longitudinally ribbed, ribs rat 

 distant, interstices striated canal very short, tr 

 cated ; dull red. 



Hab. West Indies. 



The whorls are prominently angled in the middle, 8 

 at the angle are produced into a slight nodule. 



ERRATUM. 

 Plate XXXLX.— Instead of Sowerly del. et sculp.— read Pretre del. Sowerby lith, 



