362 



Illinois Natural History Survey Bulletin 



Vol. 28, Art. 2 



Fig. 15. — Dorosoma cepedianum. 



Fi^. 16. — Esox amcrlcanus. 



Fig. 17. — Carpiodes cyprinus. 



Fig. 18. — Carpiodes velifer. 



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 & Richardson; indicated species collected. 



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

 lecting station of L.arimore & 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. 



