GENERAL AND IXTERIOR DISTRIBUTION 



Ixxxix 



Species of the Illinois Basin, and Number of Collections 



CONTAINING EACH COncludcd 



Species 



Hadropterus evennanni .... 



Burbot 



Notropis phenacobius 



Silver chub 



Lepomis symmetricus 



Notropis ana genus 



A', illecebrosus 



Viviparous top-minnow. . . 



Mooneye 



Black-horse 



Placopharynx duquesnei. . . . 



Notropis pilsbryi 



Hybopsis hyostomus 



Blue cat 



Collections 



3 

 3 

 2 

 2 

 2 

 2 

 2 



Species 



Brindled stonecat 



Slender stonecat 



Brook stickleback 



Round sunfish 



Lepomis ctiryorus 



Hadropterus scicrns. . . . 



Lake sturgeon 



Shovel-nosed sturgeon . 



Alligator-gar 



Eel 



Ictalurus anguUla 



Muskallunge 



Green-sided darter. . . . 



Collections 



+ 

 + 

 + 

 + 

 + 

 + 

 -f 



Of the twenty-three IlHnois species which ha\'e not been taken by 

 us in the Illinois River or its tributaries, two are distinctivel}^ w^estern 

 fishes, and occur but rarely anywhere within our limits; nine are 

 southern species, few of which ha^•e been found as far north as the 

 mouth of the Illinois, and one other is only southern in this state; 

 tw^o are northern species which barely reach our borders ; five are typ- 

 ical 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 aie very rare in this 

 state. 



Further particulars as to the species of these various geograph- 

 ical groups are given in the following classified list. 



Illinois Species not found in the Illinois Basin 



western (2) : 



Hybognathus nubila 

 Flat-headed chub 



northern (2) ; 



Long-nosed sucker 

 Nine-spined stickleback 



