CLASS PISCES 



45 



making clear lakes muddy, of eating wild celery and grasses on 

 which ducks feed, and of devouring the eggs of other fishes. 



FIG. 386. The carp, Cyprinus carpio. (From Lankester's Treatise, 



after Seeley.) 



Family 2. SILURID.E. - - The Catfishes. These are mostly 

 fresh- water fish, about thirty species of which are known from the 

 United States. The body of the catfish is naked ; the head bears 

 eight barbels; and there is a short, fatty, adipose fin back of the 



FIG. 387. The bullhead or catfish, Ameiurus mclas. (From Dean, 



after Goode.) 



dorsal fin. The bullhead or horned pout, Ameiurus nebulostis, 

 is a common fish in the ponds and streams of the North and 

 East. The black bullhead, Ameiurus melas (Fig. 387), is found 



