XC1V 



FISHES OF ILLINOIS 



Of the twenty-three Illinois species which have not been 

 taken by us in the Illinois River or its tributaries, two are dis- 

 tinctively western fishes, and occur but rarely anywhere within 

 our limits; nine are southern species, few of which have been 

 found as far north as the mouth of the Illinois, and one other is 

 only southern in this state; two are northern species which barely 

 reach our borders; five are typical fishes of the Great Lakes; 

 one has been found by us only in the main Mississippi and the 

 Ohio; one is a subterranean fish of strictly local occurrence; 

 and the two remaining species are very rare in this state. 



Further particulars as to the species of these various geo- 

 graphical groups are given in the following classified list. 



Illinois Species not found in the Illinois Basin 

 western (2): northern (2): 



Hybognathus nubila Long-nosed sucker 



! Flat-headed chub Nine-spined stickleback 



