366 



Illinois Natural Historv Survey Bulletin 



Vol. 28, Art. 2 



Fig. 31. — Notropis chrysocephalus. 



Fig. 32. — Notropis dorsalis. 



Fig. 33. — Notropis lutrensis. 



Fig. 34. — Notropis rubellus. 



Distribution of Champaign County fishes as determined by three surveys at approximately 30- 

 year intervals. 



Open triangle: collecting station of Forbes & Richardson; indicated species not collected. 



Solid triangle: collecting station of Forbes i Richardson; indicated species collected. 



Small open circle alone: collecting station of Thompson & Hunt and also, if extant in 1959, col- 

 lecting station of Larimore & Smith; indicated species not collected at this station. 



Large open circle enclosing small open circle or solid circle: collecting station at which Thompson 

 & Hunt took indicated species. 



Solid circle alone or within large circle: collecting station at which Larimore & Smith took indi- 

 cated species. Most of these stations had previously been sampled by Thompson & Hunt. 



