PLEUROTOMA. 



Plate XXI. 



Species 176. (Mus. Cuming.) 



Pleurotoma armillata. Pleur. testa pgramidali-ovatd, 

 subfusiformi, anfractibus spiraliter carinatis, carina 

 mediand gemmulatd, gemmulis transversis ; canali bre- 

 viusculo, sinu amplo, prof undo ; albidd, anfractibus 

 supra carinam. gemmulatam fuscescentibus . 



The bracelet-encircled Pleurotoma. Shell pyra- 

 midally ovate, somewhat fusiform, whorls spirally 

 keeled, middle keel beaded, beads transverse ; canal 

 rather short, sinus large, deep ; whitish, whorls light 

 brown above the beaded keel. 



Reeve, Pro. Zool. Soc, 1845. 



Hub. Philippine Islands ; Cuming. 



Care must be observed not to confound this species with 

 the Pleurotoma jubata or gemmata, in which the beads of 

 the middle keel are longitudinal, whilst in this they are 

 compressly transverse. 



Species 177. (Mus. nob.) 



Pleurotoma aqjjatilis. Pleur. testa ovato-turritd, so- 

 lidd, spird acuminata, anfractibus Iambus, superne de- 

 pressis, oblique plica.to-tubercula.tis ; canali brevissimo, 

 sinu amplo ; eburned, lineis plurimi-s subtilissimis un- 

 dulatis, pallidissime corneo-fuscescentibus, fasciaiim. 

 pictd. 

 The rippled Pleurotoma. Shell ovately turreted, so- 

 lid, spire acuminated, whorls smooth, depressed round 

 the upper part, obliquely plicately tubercled ; canal 

 very short, sinus large ; ivory-white, painted with 

 bands of extremely line pale horny-brown waved 

 lines. 

 Reeve, Pro. Zool. Soc, 1815. 



Hob. ? 



The delicate and very characteristic wavy hair-line paint- 

 ing of this shell is scarcely discernible with the naked eye. 



Species 178. (Mus. nob.) 



Pleurotoma flavescens. Pleur. testa ovato-turritd, 

 anfractibus superne valde coucavis, infra transversim 

 striatis, nodosis, nodis svhirregulariter costellaforme 

 confluentibus ; canali brevissimo ; flavescente-olivaced. 



The yellowish Pleurotoma. Shell ovately turreted, 

 whorls very concave round the upper part, beneath 



transversely striated, noduled, nodules irregularly 

 flowing down like small ribs ; canal very short, yel- 

 lowish-olive. 



Reeve, Pro. Zool. Soc, 1845. 



Hub. ? 



The sculpture of this shell somewhat resembles that of 

 the Pleurotoma fuscescens, the sutural keel of that species 

 is however wanting, and the colour is uniformly different. 



Species 179. (Mus. Walton.) 



Pleurotoma fragilis. Pleur. testa ovatd, ventricosd, 

 tenui,fragili, translucidd, anfractu ultimo valde maxi- 

 mo ; lineis subtilibus elevatis undique creberrime' reticu- 

 lata quorum transversis fortioribus ; aperturd ampld, 

 sinu aid; columella basique truncatis ; lucido-albd. 



The fragile Pleurotoma. Shell ovate, ventricose, thin, 

 fragile, transparent, last whorl very much the largest ; 

 very closely reticulated throughout with fine raised 

 lines, of which the transverse are the stronger ; aper- 

 ture large, sinuated; base and columella truncated; 

 transparent white. 



Reeve, Pro. Zool. Soc, 1S45. 



Hob. ? 



I am indebted to the kindness of William Walton, Esq. 



for the loan of this interesting species, belonging to a small 



group which Mr. Hinds has generically distinguished bj 



the title of Daphnella. 



Species 180. (Mus. nob.) 



Pleurotoma pulchella. Pleur. testd ovato-turritd, an- 

 fractibus superne depressis, medio plicato-tuberculatii 

 tuberculis angustis, confluentibus, anfractu ultimo tuber- 



rulo gibboso niunito ; canali brevissimo, sinu amplo : 



Divide rosacea, fascia linedque castanets spiraliter cin- 



(julatd. 



The pretty Pleurotoma. Shell ovately turreted, whorls 

 depressed at the upper part, plicately tubercled in 

 the middle, tubercles narrow, flowing downwards, last 

 whorl furnished with a gibbous tubercle ; canal rather 

 short; sinus broad; bright pink, spirally encircled 

 with a chesnut-brown band and line. 



Reeve, Pro. Zool. Soc, 1845. 



Hab. ? 



October 1845. 



