zooLocr. 179 



tipwards ; mouth rough within ; giU-memhrane eight 

 rayed ; belly sharp, and in most species serrated. 



The Herring tribe afford a very great quantity of food (o 

 mankind, and is one of the most abundant and prolific genera ; 

 the Herring fishery employing a very considerable portion of v 

 the population of such districts as pursue this trade. 



20. Caprinus. Carp. Mouth small ; teeth situated in tha 

 throat ; gill'membrane three rayed ; one dorsal Jin. 



21. Mormyurus. Snout protruded; teeth several, emargi- 



nated ; aperture to the gills without a cover j gilU 

 membrane one rayed j body scaly. 



Division II,— CARTILAGINOUS FISHES. 



ORDER I. 



BRANCHIOSTEGO US. 



GILLS WITHOUT BONY BAYS. 



In this extensive order but few of the kinds are useable as 

 food, most of them are exceedingly voracious, devouring 

 every animal they can master ; they vary greatly in form, 

 and equally so in habits and propensities ; the larger part 

 feed on fish, and dead carcasses, others on moluscae, and 

 sea weed j there are eighteen genera in the order. 



ir2 



