PLEUROTOMA.— Plate X. 



Species 85. (Mus. Cuming.) 

 Pleurotoma Tritonoides. Pleur. testd subovali, apice 

 acuta, fulvd, pallide albifasciatd ; anfractibus con- 

 vexis, costis longitudimlibus, subtilissime nodulosis, 

 lineis transversis elevatis eximii cancellatis ; labro 

 incrassato, sinu parvo ; canali brevi, subrecurvo. 



The Triton-like Pleurotoma. Shell somewhat oval, 

 apex sharp, yellow, palely banded with white; 

 whorls convex, delicately cancellated with very 

 finely nodulous longitudinal ribs and elevated trans- 

 verse stria? ; lip thickened, sinus small ; canal short, 

 a little recurved. 



Reeve, Pro. Zool. Soc, 1843. 



Hab. Bais, Island of Negros, Philippines (found in coral 

 sand at the depth of seven fathoms) ; Cuming. 

 This shell is of a duller and more uniform colour than 



the preceding ; the last whorl is more ventricose, and 



the longitudinal ribs are finer and more numerous. 



Species 86. (Mus. Cuming.) 

 Pleurotoma abbreviata. Pleur. testd abbreviato-fusi- 

 formi, cosruleo-albd, nigra maculatd et punctatd ; 

 anfractibus medio angulato-carinatis, carina medio 

 partita, superne depressis, funiculo maximo nigra- 

 maculato cingulatis, in/erne multifuniculatis, funi- 

 culus minoribus nigro lineatis et punctatis ; canali vix 

 elongate 

 The shortened Pleurotoma. Shell of a shortened 

 fusiform shape, bluish white, spotted and dotted 

 with black ; whorls angular, keeled round the mid- 

 dle, keel divided, upper portion of the whorls de- 

 pressed, encircled near the suture with a stout 

 black-spotted cord, lower portion encircled with 

 numerous smaller cords, painted with short black 

 lines and dots ; canal scarcely elongated. 

 Reeve, Pro. Zool. Soc, 1843. 



Hab. Island of Masbate, Philippines (found on the reefs 

 at low water) ; Cuming. 



A very interesting species, which looks at first sight 

 like a broken portion of the PL tigrina. A number of 

 specimens were collected by Mr. Cuming at the above- 

 mentioned island. 



vexis, equidistanter carinatis, carinis duabus centrali- 

 busjubatis; aperturd brevi ; canali brevissimo. 

 The double-crested Pleurotoma. Shell cylindrically 

 pyramidal, brown, keeled with lighter reddish 

 brown; whorls convex, equidistantly keeled, the 

 two central keels crested or festooned ; aperture 

 short ; canal very short. 



Reeve, Pro. Zool. Soc, 1843. 



Hab. Island of Bureas, Philippines (found under stones 

 at low water) ; Cuming. 

 Of the two crested keels which encircle this very 



characteristic species, the upper one is the more faintly 



developed. 



Species 88. (Mus. Cuming.) 

 Pleurotoma planilabrum. Pleur. testd ovato-oblongd, 

 apice acuto, rubido-fuscd; anfractibus convexis, trans- 

 verse lineatis, longitudinalitercostatis, costis fere ob- 

 soletis ; aperturd oblongd, labro piano, rubido, intus 

 denticulato ; canali brevissimo. 

 The flat-lip Pleurotoma. Shell ovately oblong, apex 

 sharp, reddish brown; whorls convex, lineated 

 transversely, ribbed longitudinally, ribs almost ob- 

 solete ; aperture oblong, lip flat, red, and denticu- 

 lated within ; canal very short. 

 Reeve, Pro. Zool. Soc, 1843. 



Hab. Sibonga, Island of Zebu, Philippines (found under 

 stones at low water) ; Cuming. 

 The posterior extremity of the lip in this shell is acu- 

 minated to a sharp point. 



Species 87. (Mus. Cuming.) 

 Pleurotoma bijubata. Pleur. testd cylindraceo-pyra- 

 midali, fused, fuscescente carinatd ; anfractibus con- 



Species 89. (Mus. Cuming.) 

 Pleurotoma corusca. Pleur. testd subpyramidali, valde 

 politd ; anfractibus superne planis , fusco alboque ne- 

 bulosis, inferne leviterprominentioribus, punctis fuscis 

 irregularis cingulatis, anfractu ultimo punctorum 

 seriebus duabus cingulato ; aperturd brevi; canali 

 brevissimo. 



The glittering Pleurotoma. Shell rather pyramid?!, 

 highly polished ; upper portion of the whorls flat, 

 clouded with reddish brown and white, lower por- 

 tion more prominent, encircled with a row of irre- 

 gular reddish brown dots, last whorl encircled with 

 two rows of dots ; aperture short ; canal very short. 



Reeve, Pro. Zool. Soc, 1843. 



Hab. Island of Capul, Philippines ; Cuming. 



Two specimens only of this shell were found by Mr. 

 Cuming on the reefs at the above-mentioned island. 



