PLEUEOTOMA.— Plate XXXII. 



ribbed, and corded with narrow transverse strise ; lip 

 thickened, denticulated within, sinus large, broad ; yel- 

 lowish white. 



Peeve, Pro. Zool. Soc, 1845. 



Hab. Baclayon, Island of Bohol, Philippines (found under 

 stones at low water on the reefs) ; Cuming. 

 An elegant and most symmetrically formed shell. 



Species 293. (Mus. Cuming.) 



Pleurotoma hexagonalis. Pleur. testa pyramidali- 

 ovatd, anfractibus costis sinis conthmis longitudinaliter 

 ornatis; aperturd pared, sinu distincto ; fuscescente-albd. 

 The hexagonal Pleurotoma. Shell pyramidally ovate, 

 whorls ornamented longitudinally with six continuous 

 ribs ; aperture small, sinus distinct ; brownish white. 

 Peeve, Pro. Zool. Soc, 1845. 



Hab. Loay, Island of Bohol, Philippines (found in sandy 

 mud at the depth of seventeen fathoms) ; Cuming. 

 A small pyramidal six-sided shell resulting from the con- 

 tinuous arrangement of the ribs. 



Species 294. (Mus. Cuming.) 



Pleurotoma arctata. Pleur. testa pyramidali-elongutd, 



anfractibus oblique costatis, costis striis elevatis funicu- 



latis ; labro incrassato, peculiariter effuso, sinu arnplo; 



sordide alba. 

 The narrow Pleurotoma. Shell pyramidally elongated, 



whorls obliquely ribbed, ribs corded with raised striae ; 



lip thickened, peculiarly effused, sinus large; dull 



white. 

 Peeve, Pro. Zool. Soc, 1845. 

 Hab. Island of Corrigidor, Philippines (found among coarse 



sand at the depth of seven fathoms) ; Cuming. 



Allied to the Pleurotoma spurca, but of a narrower and 

 more subulate growth. 



Fi°\ 295. — The shell here represented proves to be the 

 young spiral portion of a species of Mangelia. 

 For Species 295 see pi. XXXIX. 



