PART II. 



A NATURAL ARRANGEMENT 



OF THE UNIVALVE AND BIVALVE SHELL-FISH, COMPOSING 



THE OBDICRS 



GASTEROPODA AND DITHYRA 



OF THE CLASS 



TESTACEA. 



Chief Abbreviations. 



Bligh Cat. Catalogue of the Bligh Mart, or Mar. Martini. 



Shells. Sow. Gen. or S. Gen. Sowerbi/'s 

 Chem. or Ch. Chemnitz. Genera of Shells. 



Ency. Meth. or En. M. Encyclo- Sow. Man. Sowerby's Manual of 



pedie Methodique. Conchology. 



Lam. System of Invertebrated ani- Tank. C. Tankerville Catalog^(e. 



mats ; the No. refers to his series Zool. 111. i. & ii. Zoological fllus- 



of species in the original edition. trations. First and Second Series. 



Order GASTEROPODA. 

 Tribe ZOOPHAGA. Carnhwous Gastropods. 



Family 1. MURICIDiE. Murexes and Whelks. 



Pillar never plaited ; shell spiral, the base narrowed, 

 and either truncate or slightly produced. 



SuB-FAM. 1. MURICIN^. Murexes. 



Spire as long as the aperture ; exterior rough ; the 

 whorls marked with varices ; aperture wide. 



MuREx Lin. Varices from three to five on each whorl ; 



u 4 



