TRACHELIPODA. 89 



columella plicate, the plaits varying in number; usually 

 transverse ; lip internally furrowed. 



Cancellaria reticulata The Reticulated Cancel- 



LARiA. Plate XII. fig. 4. Oval, strong, ventricose, with 

 distant, coarse, reticulated striae; sometimes with yellow 

 or orange bands ; pillar with three plaits ; aperture white 

 Two inches long. Inhabits the Atlantic ocean. 



Genus 34.— TURBINELLA Lamarck. 



Generic CJiaracter — Shell turbinated or sub-fusiform ; 

 with a canal at the base ; columella with from three to five 

 oblique, transverse, and compressed plaits. 



Somewhat allied to both Murex and Voluta, but differing from the 

 former in the want of varices, and from the latter, in having no canal ; 

 although also somewhat like Fasciolaria, it can be distinguished from 

 that genus by the position of the plaits on the columella. 



Turhinella Pyrum. — The Pear-shaped Turbinella. 

 Plate XII. tig. 8. Pear-shaped ; yellowish- white, with irregu- 

 lar reddish-brown spots ; spire short, mucronate; apex mam- 

 milliform ; beak long; columella with four plaits; in adult 

 specimens, the shell is covered with a very thick opaque 

 yellow-brown epidermis. Six inches long. Inhabits the 

 Indian ocean. 



Genus 35.— PLEUROTOMA Lamarck. 



Generic Character Shell turreted or fusiform, termi- 

 nated below by a straight canal, of greater or less length ; 

 outer-lip with a notch or fissure at the upper part; aperture 

 with a small horny operculum. 



Pleurotoma nodiftra The Javanese Pleurotoma. 



Plate XII. fig. 7. Fusiform, turreted; volutions somewhat 

 angulated, upper ones smooth; under volutions and body 

 transversely striated with angulated oblique nodules at the 

 suture ; outer lip deeply crenulated, with a large notch ; 

 reddish-yellow. One inch and a half long. Inhabits the 

 seas around Java. 



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