PLEUROTOMA. 



Plate XXXIX. 



,.,-,. v m„ m no-^ifip,l scale have been kindly communicated by M. Alcide D'Orbigny, 



The species illustrated m th.s ^^{J^^SuS % deep water ii the West bte 



Species 357. 



urotoma occidental! s. Pleur. test" subfusiformi, 

 anfractibus rotundatis kngitudimliter crebricostatis, 

 coslis liris angustis nodoso-decussatis ; canali sube- 

 longato ; rosaeeo-fuscescente. 



j western Pleurotoma. Shell somewhat fusiform, 

 whorls rounded, longitudinally closely ribbed, ribs 

 nodosely decussated with narrow ridges ; canal a little 

 elongated ; pinkish-brown. 



i. West Indies. 



Hstinguished by its rounded whorls, and general fusi- 



n shape, somewhat abbreviated towards the canal. 



Species 358. 



burotoma candidula. Fleur. testa subacuminato-fusi- 

 formi, anfractibus superne leviter depresses, longitudina- 

 liter angiliratis, transversim striatis, canali subelongato, 

 recto ; sinu amplo ; albicante, labri limbo rosacco. 



:e whitish Pleurotoma. Shell rather acuminately 

 fusiform, whorls slightly depressed round the upper 

 part, longitudinally narrow-ribbed, transversely stria- 

 ted, canal a little elongated and straight ; sinus large ; 

 whitish, lip edged with pink. 



lb. West Indies. 



Of rather a more straightly fusiform growth than the 



eceding species. 



Species 360. 



Pleurotoma angulifera. Pleur. testa fusiformi, an- 

 fractibus peculiarity angulaiis, longitudinaliter en M- 

 costatis, costis ad angulum leviter nodosis, in/erne 

 elevato-striatis ; canali breviusculo ; anfractibus medio 

 lutescentibus, supra et infra rubido-fuscis. 



The anguliferous Pleurotoma. Shell fusiform, whorls 

 peculiarly angulated, longitudinally closely ribbed, 

 ribs slightly nodose at the angle, elevately striated 

 round the lower part ; canal rather short ; whorls 

 yellowish round the middle, reddish brown above 

 and below. 



Hab. West Indies. 



The ribs of this species assume a peculiarly angidated 



growth. 



Species 359. 



leurotoea D'Orbignii. Pleur. testa fusiformi, acu- 

 minata turritd, anfractibus rotundalis, liris subtilibus 

 spiraliter cingulatis, canali breviousculo, sinu amplo ; 

 pallide stramineo-albicante, labri Umbo rosaceo. 



i'Orbigny's Pleurotoma. Shell fusiform, acuminately 

 turreted, whorls rounded, spindly encircled with fine 

 ridges ; canal rather short, sinus large ; very pale 

 straw-colour, edge of the lip conspicuously tinged 

 with pink. 



lab. West Indies. 



I dedicate this most dehcate and beautiful of the series 

 the indefatigable naturalist to whom I am indebted for 

 hem. 



Species 361. 



Pleurotoma clathrata. Pleur. testa fusiformi, spird 

 breviusculd, anfractibus subventricosis, superne leviter 

 canaliculars, liris subtilibus concent ricis et transversis 

 puhherrime elathratis ; sinu amplo ; fuscescente, rufo 

 variegatd. 



The latticed Pleurotoma. Shell fusiform, spire rather 

 short, whorls rather ventricose, slightly channelled 

 round the upper part, very beautifully latticed with 

 fine concentric and transverse ridges ; sinus large ; 

 light brown variegated with red. 



Hab. West Indies. 



Easily distinguished by its debcate latticed sculpture 



Species 262. 



Pleurotoma macrostoma. Pleur. testa ovato-fusif 



spird breviusculd obtusd, anfractibus convexis, coslis 

 obtusis, oblique concentricis, infeml evanidis, omatis ; 

 canalipeculiariterattenuato,aperturdangustd,si 

 caruleo-purpurascente, rubido lineatd et variegatd. 



The lokg-motjth Pleukotoma. Shell ovatelj fusiform, 

 spin' rather short, obtuse, whorls convex, ornamented 

 with obtuse obliquely concentric ribs, fa 

 towards the lower part; canal peculiarly attenuated, 

 aperture narrow, simiated; blueish-purple, lit 

 and variegated «iili red. 

 A curious obtuse shell verj distinctly characterized. 



April, 1846. 



