183 
Conch. Icon., Pleurotoma, pl. 10. f. 88. 
Hab. Sibonga, island of Zebu, Philippines (found under stones at 
low water) ; Cuming. 
The posterior extremity of the lip in this shell is acuminated to a 
sharp point. 
Pievrotoma corusca. Pleur. testdé subpyramidali, valde politd ; 
anfractibus superne planis, fusco alboque nebulosis, inferne leviter 
prominentioribus, punctis fuscis irregularibus cingulatis, anfractu 
ultimo punctorum seriebus duabus cingulato ; aperturd brevi ; canali 
brevissimo. 
Conch. Icon., Pleurotoma, pl. 10. f. 89. 
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. 
Prrvrotoma Harrorpiana. Pleur. testd obeso-pyramidali; an- 
fractibus nigerrimis, in medio luteo-balteatis, convexis, transversim 
subtilissimé striatis, superne depressiusculis, serie unicd nodulorum 
ornatis, infra noduloso-costatis ; aperturd breviusculd ; sinu parvo, 
rotundato. 
Conch. Icon., Pleurotoma, pl. 11. f.93. 
Hab. ? 
I have much pleasure in dedicating this species to its possessor, 
an intelligent conchologist, and one highly worthy of remembrance. 
The yellow belt which passes round the middle of each whorl has a 
strikingly neat appearance. 
Pirvrotoma Perroni. Pleur. testd fusiformi, turritd, leviusculd, 
pallide luted ; anfractibus planis, superné leviter angulatis, ultimo 
inferné coarctato, transversim lirato, liris regularibus, subdistan- 
tibus ; sinu subcentrali ; canali subelongato, recto. 
Conch. Icon., Pleurotoma, pl. 11. f. 94. 
Murex Perron, Chemnitz, Conch., vol. x. pl. 164. f. 1578. 
Hab. ? 
This interesting shell has been confounded by Lamarck with the 
P. spirata, It differs from that species in being more erect and fu- 
siform, in the sutures of the whorls being less deeply channeled, and 
in the lower portion of the last whorl being crossed with about four 
or five narrow, well-developed ridges. 
Pievrotoma pLureata. Pleur. testd fusiformi, gracili, fulvd ; 
anfractibus convexis, pluteo superné ornatis, medio nodulis albidis 
catenulatis, infra subtilissime sulcatis ; sinu lato ; canali elongato. 
Conch. Icon., Pleurotoma, pl. 12. f. 101. 
Hab. ? 
The shelf which passes round the upper portion of the whorls is 
not less characteristic of this species than the delicate chain of white 
nodules which encompass the centre. 
Prevrotoma mystica. Pleur. testé abbreviato-fusiformi, rubido- 
fused ; anfractibus superne concavis, striatis, infra angulatis, tu- 
