82 CANALIFERA, CERITHIUM. 



never forget me in your purchases or your 

 pleasures." 



•' Let us return to our subject,*" said Mr. 

 Elliot, " and notice the families of the next sec- 

 tion, which are all carnivorous, living on animal 

 substances. They have a projecting syphon, 

 which conveys the water to them : they are all 

 marine. The syphon passes through the base of 

 the aperture, either into a canal, or channel, or 

 a narrow, recurved margin. The mouth is fur- 

 nished with a trunk. 



" Canalifera contains in the first section, 



Cerithmm Chiefly Murex. 



Pleiirotoma ...Mureai. 



Turhinella Voliita and Murex. 



Cancellaria . . . Voluta. 

 Fasciolaria .. Mureoc. 



Fusus Mureso. 



Pyrula Murex and Bulla. 



" The naturalist Bruguieres established the fine 

 genus Cerithmm, mixed by Linna?us among 

 those of Murex, Stromhus^ and Trochus. 

 These shells are always turreted, having a short 

 canal at the base ; the aperture oblong, oblique, 

 with a gutter turned backwards. (See Frontis- 

 piece.) Many are girded with zones, that are 

 granulated, or beset with little tubercles. It is 



