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A Descriptive Catalogue of the GASTEROPODOVS MOLLUSC A of 

 Bencichhire. By Gteorge JoH^^STO^r, M.D., F.E.C.S.E. 



Part I. 



Class— MOLLUSCA GASTEEOPODA. 



Order .— PECTINIBE ANCHIAT A . 



Division— SIPHONOSTOMATA. 



Animal trachelipode, shelled ; the shell spiral or convolute, with the 

 margin of the aperture channelled or emarginate at the base. 

 The genera are all zoophagous, dioecious, and inhabitants of the 

 sea. 



Synopsis of the G-enera. 



* 8hcll turbinate, operculate. 



Outer lip much expanded, . . . . ■ . Chenopus. 

 Outer lip normal, the rim not ribbed. 



Siphonal canal elongated, .... Fusus. 



Siphonal canal very short. 



Pillar rounded, ..... Buccinttm. 



Pillar flat, Purpttra. 



Oiiter lip with a thick rib or varix, . . . Nassa. 



*^ Shell convolute, non-operculate. 



Aperture linear with toothed lips, . . . Cype^a. 



1. Chenopus. f Philippi. 



Shell turreted ; aperture oblong, a shallow canal leading from each 

 extremity along a produced process or beak ; lip greatly dilated, entire 

 or digitate, with a sinus contiguous to the canals ; operculum horny. 



1. Ch. pes pelecani, shell pale brownish flesh-colour, finely striated 

 spirally; the spire tapered, of 10 whorls, raised and nodulous 

 round the middle ; the body with three nodvdous bands, the two 

 inferior approximate and small ; aperture white : lip dilated, 

 sinuated above and below, and furrowed with 4 channels, of which 

 one is up the spire ; canal short, bent. Length l-rVths ; breadth 

 1 inch. Philip. Moll. Scil. 214. Eostellaria pes pelicani. Lam. 

 Anim. s. Yert. vii. 193. Flem. Brit. Anim. 359. Strombus pes 

 pelicani, Linn. Billw. Eec. Sh. 656. 



+ It seems to be now agreed that the shell which forms the type of this genus 

 ought to be separated from the Rostellaria of Lamarck. Mr Swainson gives the 

 new genus the name of Aphorrais, borrowed from Da Costa (Malacology, p. 309); 

 but Da Costa's genus was ill defined, and was rather coequal with Pteroceras of 

 Lamarck than with Chenopus of Philippi. See his Elem. of Conchology, p. 230. 



