PLEUROTOMA. 



Plate XIV. 



Species 114. (Mus. Cuming.) 



Pleurotoma geacilenta. Pleur. testd gracillime fusi- 

 formi, fulvd, anfractibus convexis, longitudinaliter 

 costel/atis, cost Mis leviter nodulosis, slriis elevatius- 

 culis transversis decussatis ; labro suhfexuoso, sinu 

 lata ; canali breviusculo. 



The slim Pleurotoma. Shell slenderly fusiform, yel- 

 lowish or pale brown ; whorls convex, longitudi- 

 nally ribbed, ribs small and slightly nodulous, 

 crossed by rather elevated transverse lines ; lip a 

 little flexuous, sinus broad ; canal rather short. 



Reeve, Pro. Zool. Soc, 1843. 



Hab. Loay, Island of Bohol, Philippines (dredged from 

 sandy mud at the depth of seventeen fathoms) ; 

 Cuming. 



A shell of simple character, unlike any hitherto-de- 

 scribed species, though not presenting any very striking 

 peculiarity. 



Species 115. (Fig. a & b, Mus. Cuming.) 



Pleurotoma pessulata. Pleur. testd subacuto-fusi- 

 formi, fulvd vel cinered, anfractibus leviter convexis, 

 longitudinaliter costatis, costis subdistantibus, striis 

 transversis subobsoletis decussatis ; labro tenui, sinu 

 parvo ; canali breviusculo, subrecurvo. 



The rarred Pleurotoma. Shell rather sharply fusi- 

 form, yellow or ash-colour ; whorls slightly convex, 

 longitudinally ribbed ; ribs rather distant, crossed 

 with somewhat obsolete transverse stria? ; lip thin, 

 sinus small ; canal rather short, a little recurved. 



Reeve, Pro. Zool. Soc, 1843. 



Hab. Bolinao, Island of Luzon, Philippines (dredged 

 from sandy mud at the depth of ten fathoms) ; 

 Cuming. 



Although the ribs in this species are comparatively 

 distant from each other, they vary considerably in this 

 respect in different individuals ; the more elongated the 

 shell, the claser the ribs, as shown by the specimens 

 here figured. 



Species 116. (Mus. Cuming.) 



Pleurotoma contracta. Pleur. testd elongato-ovatd, 

 albidii; anfractibus plano-convexis, superu'i contract is, 

 costel/is longitudinalibns numerosis, striisque trans- 



versis elevatis eximie reticulatis ; sinu lato, canali 

 brevi. 



The contracted Pleurotoma. Shell elongately oval, 

 whitish ; whorls flatly convex, contracted round the 

 upper part, delicately reticulated with numerous 

 small longitudinal ribs and elevated transverse striae ; 

 sinus broad, canal short. 



Reeve, Pro. Zool. Soc, 1843. 



Hab. Cagayan, province of Misamis, island of Minda- 

 nao, Philippines (dredged from sandy mud at the 

 depth of twenty-five fathoms) ; Cuming. 



This species may be recognised by the peculiar con- 

 traction of the whorls near the suture ; the sculpture is 

 not much unlike that of the C. gracilenta. 



Species 117. (Mus. Cuming.) 



Pleurotoma cedo-nulli. Pleur. testd lanceolato-fusi- 

 formi, eximie turritd, apice acuto ; griseo-albicunte ,- 

 anfractibus in medio vald'e carinalis, carind com- 

 pressd, pereleganter diadematd ; sinu amplo, canali 

 longissimo. 



The matchless Pleurotoma. Shell lanceolately fu- 

 siform, delicately turreted, apex sharp ; greyish- 

 white; whorls strongly keeled round the middle, 

 keel compressed, and very elegantly coronated with 

 a diadem of sharp triangular appendages like flat- 

 tened scales ; sinus large, canal very long. 



Reeve, Pro. Zool. Soc, 1843. 



Hab. Bay of Panama (found in sandy mud at the depth 

 of ten fathoms) ; Cuming. 



Although this beautiful little shell has not reached its 

 mature growth, I do not hesitate to publish it as a new 

 species ; the curious diadem of sharp flattened processes, 

 which forms so striking a peculiarity, is somewhat like 

 that of the Fusus pagodus, Lesson, figured by Kiener, 

 pi. .5. f. 2. The sinus is rather large, and the sinu; ted 

 stria? on the upper part of the whorls distinctly exhibit 

 the traces of its earlier formation throughout their 

 several volutions. 



Species 118. (Fig. a, b & c, Mus. Cuming.) 

 Flkikotoma crassilabri m. Pleur. testd oca/o-1 urritd, 

 ■flavicante, fusco cmruleoquevarie zonatd .- anfractibus 

 convexis, superne lavibus, infra tuberculato-costatis, 



June 1843. 



