240 



ZOOLOGY 



absence of scales on the body. They are characteristic of 

 South America, but there are a large number of species in 

 the United States, mostly found in the Mississippi valley 





->>.. X ' 



* . . * ' 





; -* 



V 





X x\ 

 X X V V 



, v\V 



NV 



FIG. 222. One of the flatfishes, seen from the upper side. Two-thirds nat. 



sixe. Photo, by W. H. C. P. 



and the Great Lakes, inhabiting deep or sluggish waters, 

 and living in the mud. The common New England 



FIG. 22-". Anicairus iirhtilosiix, the catfish. About one-half nat. size. Photo, 

 of living animal by Dr. R. AV. Shufehlt, " Bull. U. S. Fish Com.," 1899. 



