100 



FISHES OF ILLINOIS 



TABLE II 



Minnows and the Environment 



Relations to Current 



species and frequency coefficients 



TABLE III 



Relations to Bottom 



species and frequency coefficients 



Campostoma anomalum. 



Ericymba buccata 



Hybopsis kentuckiensis. . 



Notropis cornutus 



Cliola vigilax 



Notropis blennius 



N. whipplii 



Phenacobius mirabilis. . . 

 Notropis atherinoides . . . 

 Semotilus atromaculatus 

 Notropis umbratilis 



3.26 

 3.20 

 2.24 

 2.20 

 2.04 

 2.00 

 1.60 

 1.36 

 1.22 

 1.11 

 1.01 



Abramis crysoleucas . . 

 Pimephales promelas. . 

 Notropis lutrensis .... 

 Hybognathus nuchalis . 

 Hybopsis amblops. . . . 

 Pimephales notatus. . . 



3.79 

 2. 08 

 1.69 

 1.68 

 1.50 

 1.09 



TABLE IV 



Principal Cyprinid^e of Large Rivers 



Species 



No. of 

 collections 



Frequency 

 coefficients 



Cliola vigilax 



Notropis heterodon 



N. hudsonius 



N. lutrensis t 



N. jejunus 



N. atherinoides 



Hybopsis storerianus 



1.04 

 .98 

 1.80 

 1.43 

 1.63 

 1.21 

 1.28 



