CLASS PISCES 



457 



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^. — The Catfishes. These are mostly 

 fresb-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 melas. (From Dean, 



after Goode.) 



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

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

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



