8 



of Alexander and Union counties, where it hybridizes with 

 N. lutrensis: sporadic in the lower Ohio River. 



Notrnpis vnlncelliis (Cope) subspecies — mimic shiner. 

 Generally distributed in the Wabash, Ohio, and lower Mis- 

 sissippi rivers; sporadic in small streams of the extreme 

 eastern part of the state. 



Notropis wbipplei (Girard) — steelcolor shiner. Oc- 

 casional in the Sangamon and the upper Wabash drainage 

 systems; sporadic in the southern half of the state. 



Opsopoeodus eniiliae Hay — pugnose minnow. Spo- 

 radic throughout the state. 



Phenacobiiis mirabilis (Girard) — suckermouth minnow. 

 Generally distributed throughout Illinois, except the ex- 

 treme northeastern part. 



Pimephales notatus (Rafinesque) — bluntnose minnow. 

 Generally distributed throughout the state. 



Pitnephalcs pro»ielas promelas Rafinesque — northern 

 fathead minnow. Generally distributed throughout the 

 northern four-fifths of the state, except in the Wabash and 

 Kankakee drainage systems. 



Pimephiiles vigilax perspicinn (Girard) — northern bull- 

 head minnow. Generally distributed in large rivers and 

 occasional in medium-sized rivers of Illinois; sporadic in 

 the extreme northeastern part. 



Rhinichthys atratidus mdeagris Agassiz — western black - 

 nose dace. Occasional throughout the northern third of 

 the state and in small gravelly tributaries of the middle 

 Illinois River; sporadic in the extreme eastern part of the 

 state. 



Rhinkhthys cataractae (Valenciennes) — longnose dace. 

 Generally distributed along the shore of Lake Michigan; 

 sporadic in the extreme northwestern part of the state. 



Semolilus alromaculatus (Mitchill) — creek chub. Gen- 

 erally distributed in small and medium-sized streams 

 throughout the state. 



Catostomidae — suckers 



Carpiodes carpio curpio (Rafinesque) — northern river 

 carpsucker. Generally distributed in large rivers and lower 

 reaches of their major tributaries throughout Illinois, ex- 

 cept the northeastern part. 



Carpindc's cyprimu ( Lesuetir ) subspecies — quillback. 

 Generally distributed throughout tlie northern two-thirds of 

 Illinois; occasional in the southern third of the state. 



Carpiodes velijer ( Rafinesque ) — highfin carpsucker. 

 Occasional in small rivers throughout Illinois, except tiie 

 northeastern counties. 



Catostomiii commersimi ( Lacepede ) — white sucker. 

 Generally distributed in small and medium-sized streams 

 throughout the state. 



Cyclc'pim elongatiis ( Lesueur ) — blue sucker. Spor.idic 

 in the Wabash, Ohio, and Mississippi rivers and lower 

 reaches of their major tributaries. 



Erif?iyzon oblongus claviformis (Girard) — western 

 creek chubsuckcr. Generally distributed tlinnighout east- 

 ern, central, and southern parts of Illinois; apparently ab- 

 sent from the northern third of the state and extremely 

 sporadic in the western counties. 



Erimyzon siicetta (Lacepede) — lake chubsucker. Spo- 

 radic throughout Illinois; extremely rare, if present at all, in 

 the central and southern counties. 



Hypeiitelium uigricajis (Lesueur) — northern hog suck- 

 er. Generally distributed throughout the northern, easrern. 

 and central parts of the state; sporadic in western Illinois 

 and apparently absent from the southern third of the state. 



Ictiohiii hiihahii ( Rafinesque ) — smallmouth buflalo. 

 Generally distributed in large and medium-sized rivers 

 throughout Illinois, except the extreme northeastern part. 



lctiobi/5 cyprinellus (Valenciennes) — bigmouth buflalo. 

 Occasional in large and medium-sized rivers throughout 

 Illinois, except the extreme northeastern part. 



Ictiobus niger (Rafinesque) — black buffalo. Sporadic 

 in large and medium-sized rivers throughout the state. 



Minytrema melanopi ( Rafinesque ) — spotted sucker. 

 Sporadic throughout the state. 



Moxostoma anisunim ( Rafinesque ) — silver redhorse. 

 Occasional throughout the northern half of the state. 



Moxostoma carinatuvi ( Cope ) — river redhorse. Spo- 

 radic in the extreme eastern part of the state. 



Moxostoma d/iqiiestiei (Lesueur) — black redhorse. Two 

 recent records, based on a few specimens from the Ver- 

 milion River in Vermilion County and Grand Pierre Creek 

 in Pope County, needing substantiation. 



Moxostoma er-\thriiriim (Rafinesque) — golden red- 

 horse. Generally distributed throughout the northern rwo- 

 thirds of the state; occasional in the southern third. 



Moxostoma macrolepidotum (Lesueur) — northern red- 

 horse. Generally distributed throughout the state, except 

 in the southern tip. 



Moxostoma valenciennesi Jordan — greater redhorse. A 

 record, based on one specimen from the Fox River in Kane 

 County, needing substantiation. 



Ictaluridae — catfishes and bullheads 



Ictaliir/is j ureal us (Lesueur) — blue catfish. Occasional 

 in the lower Wabash. Ohio, and Mississippi rivers and 

 lower reaches of their major tributaries. 



Iclaluriis melas (Rafinesque) — black bullhead. Gen- 

 erally distributed throughout the state. 



Ictubn-Hs nalalis (Lesueur) — yellow bullhead. Gener- 

 ally distributed throughout the state. 



Icialiniis iiebulosns (Lesueur) — brown bullhead. Gen- 

 erally distributed in Fox Chain O'Lakes; occasional in mar- 

 ginal lakes of the middle Illinois River; sptiradic in the 

 lower Mississippi River and lower reaches of its tributaries 

 and associated swamps. 



Ulalitrus punctatus (Rafinesque) — channel catfish. Gen- 

 erally distributed in large and medium-sized rivers through- 

 out the state. 



Noturus eleitthents Jordan — mountain madtom. Gen- 

 erally distributed in gravelly riffles of the Wabash River; 

 sporadic in lower reaches of its major tributaries. 



Noturus exilis Nelson — slender m.idtom. Sporadic in 

 gravelly streams throughout Illinois, except the e.istern part. 



Noturus ftiiius Rafinesque — stonecat. Generally dis- 

 tributed throughout the northern half of the state; occa- 



