PLEUROTOMA. 



Plate XXX. 



(All magnified to twice their natural length.) 



Species 266. (Mus. Cuming.) 



Pleueotoma caedinalis. Pleur. testa pyramidal^spird 

 acuminata, anfractibus longitudinaliter subtiliter plica- 

 lis, transversim minutissime striatis ; sinu lata, amplo; 

 al6idd,fasciis violaceo-brunneis cingulatd. 



The cardinal Pleurotoma. Shell pyramidal, spire 

 acuminated, whorls longitudinally finely plicated, 

 transversely very minutely striated; sinus broad, 

 large ; whitish, encircled with violet-brown bands. 



Reeve, Pro. Zool. Soc, 1845. 



Eab. Island of Xegros, Philippines (found among sand at 

 the depth of four fathoms) ; Cuming. 



A. very delicately formed, spirally banded species, ap- 

 proximating in general character to' the Pleurotoma ram. 



Species 267. (Mus. nost.) 



Pleurotoma aeata. Pleur. testd pyramidali, suturis pe- 

 culiariter excavatis, anfractibus Items angustis granulo- 

 sis creberrime cingulatis ; aperturd parvd ; alba. 



The ploughed Pleueotoma. Shell pyramidal, sutures 

 peculiarly excaved, whorls very closely encircled with 

 narrow granulous ridges ; aperture small ; white. 



Eab. ? 



The ridges are more granulous towards the apex. 



Species 20S (Mus. Gray.) 



Pleueotoma Guildingii. Pleur. testa pyramidali-ob- 

 lougd, anfractiius superne depresso-coneavis, infra ob- 

 lique nodoso-plicatis, transversim undique creberrime 

 striatis; intus extusque piceo-nigrd. 

 Building's Pleurotoma. Shell pyramidally oblong, 

 whorls depressly hollow round the top, obliquely no- 

 dosely plicated beneath, transversely very closely 

 striated throughout ; pitch-black within and' without. 

 Reeve, Pro. Zool. Soc., 1845. 

 Hab. St. Vincents, West Indies ; Guilding. 



I have taken the liberty of naming this species after 

 the Rev. Lansdowne Guilding, in commemoration of the 

 eminent services rendered by that gentleman, by his re- 

 searches after the minute Pleurotomae of the Island of St. 

 Vincent. 



Species 269. (Mus. Cuming.) 



Pleueotoma htalina. Pleur. testd ehngato-acumimtd, 

 ban truncatd, tenui, hyalind, longitudinaliter undique 

 minutissime et confertissime elevato-striatd ; albidd, lin- 

 eis rufo-fuscis distantibus cingulatd; labro simplici, 

 sinu parvo. 



The hyaline Pleurotoma. Shell elongately acumi- 

 nated, truncated at the base, thin, transparent, longi- 

 tudinally very minutely and closely elevately striated 

 throughout ; whitish, encircled with distant reddish- 

 brown lines ; lip simple, sinus small. 



Reeve, Pro. Zool. Soc., 1845. 



Hob. ? 



An extremely delicate hyaline shell, minutely striated 

 longitudinally, and encircled transversely with distant tine 

 brown lines, 



Species 270. (Mus. Cuming.) 



Pleueotoma Ticaonica. Pleur. testa olhngo-ovatd, 

 spird tereti, anfractiius subventricosis, transversim ir- 

 regulariter liratis, lirarum interstitiis, minutissime 

 clathratis; albidd, aurantio-fusco hie illic flammatd ; 



sinu parvo. 



The Ticao Pleurotoma. Shell oblong-ovate, spire 

 tapering, whorls rather ventricose, transversely irre- 

 gularly ridged, interstices between the ridges very 

 minutely latticed; whitish, flamed here and there 

 with orange-brown; sinus small. 



Reeve, Pro. Zool. Soc, 1S45. 



Hab. Island of Ticao, Philippines (found on the reefs) ; 

 Cuming. 



Tins and the preceding species belong to the Daphnella 

 group of Mr. Hinds. 



Species 271. (Mus. nost). 



Pleueotoma fui.va. Pleur. testd oblongo-ovatd, subtur- 

 ritd, anfractiius longitudinaliter multicostatis, costis 

 angustis, prominentibus ; fu \vd. 



The fulvous Pleueotoma. Shell oblong-ovate, slightly 



December 1845. 



