PLEUROTOMA.— Plate XXXI. 



Hab. Islands of Luzon and Mindanao, Philippines (found 

 in sandy mud at the depth of sevenfathoms) ; Cuming. 



The lip of this shell is stained internally along the edge 

 in a very characteristic manner with deep dark red. 



Species 282. (Mus. Cuming.) 



Pleurotoma nexa. Pleur. testa ovatd, Tritoniformi, an- 

 fractibus subrotundatis, plicato-costatis, funiculis exili- 

 bus angustis, costas super leviter nodulosis, cingulatis ; 

 aperturd subampld, labro planulato, sinu lato ; canali 

 brevissimo, recurvo ; alba, fusco undique tinctd et fas- 

 ciatd, funiculis suturatioribus. 



The tied Pleurotoma. Shell ovate, Triton-shaped, 

 whorls rather rounded, plicately ribbed, encircled with 

 fine narrow cords, slightly nodidous on the ribs ; 

 aperture rather large, lip flattened, sinus broad; 

 canal very short, recurved ; white, stained and banded 

 with brown, cords darker brown. 



Reeve, Pro. Zool. Soc, 1845. 



Hab. Islands of Masbate and Luzon, Philippines (found 

 under stones at low water) ; Cuming. 



An interesting brown-stained shell, tied round, as it 

 were, with fine knotted cords of a darker brown. 



Species 283. (Mus. Cuming.) 



Pleurotoma inuuinata. Pleur. testa acuminato-fusi- 

 formi, anfractibus transversim exiliter liratis, longitu- 

 dinaliter creberrime striatis ; sinu prof undo ; albidd, 

 aurantio-fusco hie illic inqidnatd. 



The smeared Pleurotoma. Shell acuminately fusiform, 

 whorls transversely faintly ridged, longitudinally very 

 closely striated ; sinus deep ; whitish, smeared here 

 and there with orange-brown. 



Reeve, Pro. Zool. Soc., 1845. 



Hab. Gindulman, Island of Bohol, Philippines (found 

 among coral sand at the depth of seven fathoms) ; 

 Cuming. 



The longitudinal striae give a fine reticidated character to 

 the ridge, with which it is delicately encircled throughout. 



Species 284. (Mus. nost.) 



Pleurotoma undaticosta. Pleur. testa fmiformi, an- 

 fractibus superne leviter depressis, costis longitudinali- 

 bus undatis concentrice ornatd ; albidd. 



The waved-rib Pleurotoma. Shell fusiform, whorls 

 slightly depressed round the upper part, concentri- 

 cally ornamented with longitudinal waved ribs ; 

 whitish. 



Reeve, Pro. Zool. Soc., 1845. 



Hab. ? 



A delicate smooth-ribbed shell in which the ribs are 



concentrically waved. 



Species 285. (Mus. nost.) 



Pleurotoma pasillus. Pleur. testa abbreviato-ovatd, 

 spirdapice acuminata; anfractibus superne concavis,uni- 

 cari?iatis, medio creberrime plicate, plicarum interstitiis 

 subtilissime striatis, inferni liratis ; sinu amplo ; nigri- 

 cante-fuscd. 



The little peg Pleurotoma. Shell abbreviately ovate, 

 spire acuminated at the apex ; whorls concave round 

 the top, with a small keel, very closely plicated in the 

 middle, interstices between the folds finely striated, 

 ridged round the bottom ; sinus large ; very dark 

 brown. 



Reeve, Pro. Zool. Soc., 1845. 



Hub. ? 



An extremely characteristic short stout dark brown 



species. 



