328 



Illinois Natlral History Survey Bulletin 



Vol. 28. Art. 2 



Fiiiutulus notntiis 



Lff>oniis cyauclliis 



Leponiis rni't/dlotis 



A tlu'O s ton I (I II III r it in 



I'/lieostoiim spfcldhilt' 



Pt'iciiKi raproJcs 

 Certain additional species, such as Le- 

 pornis macruchirus and Micropterus sal- 

 mo ides, are known to be in man\' ponds in 

 all parts of the counts , havin;^ been intro- 

 duced for sport fishing, but they were not 

 taken in all drainaj^es as rejjular com- 

 ponents of the stream populations. 



Some species could be expected to show 

 seasonal dilierences in occurrence, as sev- 

 eral of our drainaj^es are represented by 

 headwaters onl\. For example, some of 

 the catostomids mij^ht have been present 

 in headwaters durinj^ the spring months 

 but might ha\e migrated downstream and 

 out of the counts before our summer field 

 work began. Although our data on sea- 

 sonal distribution are limited, we found 

 no evidence to support the assumption 

 that spring runs of migratory species 

 greatly influence the occurrence of species 

 in Champaign County. We revisited ap- 

 proximately 20 stations in the county one 

 or more times, the revisits representing 

 the months of September, October, Jan- 

 uary, May, June, and July. Subsequent 

 visits to a station usually revealed a few 

 species that we missed on the initial visit, 

 init at every station the greatest number 

 of species was taken on the first visit, 

 probably because the low water levels in 

 July and August of 1959 had concentrated 

 the fishes. Moreover, the species added on 

 subsequent visits were usually fishes of 

 relatively sedentary habits rather than 

 strongly migratory species such as catosto- 

 mids. 



CHANGES IN DISTRIBUTION 



The earliest published references to 

 Champaign Countv Hshes appear to be 

 those of Large (1903:19, 15). who cited 

 Hyhopsis hyostomus (equals H. ficstii-alis) 

 and Opsopaeodus [sic] megalops (equals 

 Opsopoeodiis ciniliae) from specific locali- 

 ties within the county. No date or other 

 information is given, but the collections 

 are presumed to have been made prior to 

 the extensive work of Forbes & Richard- 

 son. Both records, although published in 

 1903, were overlooked, or perhaps ig- 



nored, by Forbes & Richardson (1908) 

 and all subsequent authors. The speci- 

 mens are no longer extant. 



Although fish collections by staf¥ mem- 

 bers of the Illinois State Laboratory of 

 Natural Histor\, a parent agency of the 

 Natural History Survey, were made as 

 early as 1882, no references to Champaign 

 County fishes, except those by Large 

 (1903:15, 19), appeared until Forbes 

 (1907) published a paper on the distribu- 

 tion of certain Illinois fishes. 



Forbes & Richardson Records 

 The Forbes <S: Richardson distribu- 

 tional records were plotted on the maps 

 in an atlas accompanying The Fishes of 

 Illinois or were cited in the text. Al- 

 though Hsh nomenclature of 1908 differs 

 markedl\- from that of today, we are 

 virtually- certain that the following species 

 as now recognized were included in the 

 48 collections of Forbes & Richardson : 



D oroso iiifi cepediaii um 



Esox uiiiericanus 



Carpiodes cyprinus 



Carpiodes velifer 



C(i 1 s to in n s c o in ni e rs o n i 



Eriinyzoii ohlontjus 



Hypentelium nigricans 



Ictiobus hiihalus 



Aliny treiiia in elan ops 



Aloxosioina inacrolepidotuin 



Moxostoma erythrurum 



Ca in p s 1 III a anomalu m 



Cyprinus carpio 



Ericymha huccata 



Hybognathus nuchalis 



Hybopsis (iinblops 



Hybopsis biguttata 



Hybopsis storeriana 



Noteinigonus crysoleucas 



Notropis atherinoides 



Xotropis boops 



Notropis chrysocephalus 



Xotropis dorsalis 



]\ otropis heterolepis 



\ot r p is II III brat His 



Phenacobius mirabilis 



Piniephales notatus 



Pitnephales pronielas 



Piniephales vigilax 



Semotilus atroniaculatus 



Ictaluriis inelas 



letalurus natalis 



Ictalurus punctatus 



