[chtbyomyzon unicuspn Hubbs & Trautman — silver 

 lamprey. Occasional in large rivers and lower reaches of 

 their major tributaries throughout the state. 



Lampetra laiuotlei (Lesueur; — brook lamprey. Spo- 

 radic in small and medium-sized streams throughout the 

 state. 



Petrnmyzon marinns Linnaeus — sea lamprey. Occasion- 

 al in Lake Michigan. 



Acipenseridae — sturgeons 



Acipenser jidrescens Rafinesque — lake sturgeon. Occa- 

 sional in Lake Michigan; sporadic in large rivers throughout 

 Illinois. 



Scdpbirhynchiis alb/a (Forbes & Richardson) — pallid 

 sturgeon. Known from a few specimens taken in the 

 Mississippi River a short distance above the mouth of the 

 Missouri River. 



Scaphirhynchus platorynchus (Rafinesque) — shovel- 

 nose sturgeon. Occasional in the Wabash, Ohio, and Mis- 

 sissippi rivers. 



Polyodontidae — paddlefishes 



Polyodon spathiila (Walbaum) — paddlefish. Spo- 

 radic in the Wabash, Ohio, Mississippi, and Illinois rivers 

 and the lower reaches of their major tributaries. 



Lepisosteidae — gars 



Lepisosleus oa/latus (Winchell) — spotted gar. Spo- 

 radic in lakes, sloughs, and the lower reaches of large and 

 medium-sized rivers throughout Illinois, except in the north- 

 western part. 



Lepisosteus osseus (Linnaeus) — longnose gar. Gener- 

 ally distributed in large and medium-sized rivers through- 

 out the state. 



Lepisosteus platostonms Rafinesque — shortnose gar. 

 Generally distributed in large and medium-sized rivers 

 throughout Illinois, except the northeastern part. 



Lepisosteus spiituhi Lacepede — alligator gar. Sporadic 

 in the lower and middle Mississippi River. 



Amiidae — bowfins 



Amia ailvci Linnaeus — bowfin. Generally distributed 

 in lakes, sloughs, and lower reaches of tributaries associated 

 with large rivers throughout the state and in swampy 

 streams of southern Illinois. 



Alosa psemiobarengus (Wilson) — alewife. Generally 

 distributed along the shore of Lake Michigan. 



Dorosoma cepeciiatium (Lesueur) — gizzard shad. Gen- 

 erally distributed throughout the state. 



Dorosoma petenense (Giinther) — threadfin shad. Gen- 

 erally distributed In the Ohio River and up the Mississippi 

 River a few miles north of the confluence of the two rivers. 



Hiodontidae — mooneyes 



Hiodon alosoides (Rafinesque) — goideye. Occasional in 

 the Mississippi River and in large and medium-sized rivers 

 in the southern half of the state. 



Hiodon tergisiis Lesueur — mooneye. Occasional in large 

 and medium-sized rivers in the northern half of Illinois, 

 except the extreme northeastern part; sfwradic in the south- 

 ern half of the state. 



Salmonidae — trouts and whitefishes 



Coregontis artedii Lesueur — cisco. Occasional in Lake 

 Michigan; sporadic in the Illinois River. 



Salmo gairdneri Richardson — rainbow trout. Sporadic 

 in the extreme northern part of the state. 



Salmo trutta Linnaeus — brown trout. Sporadic in the 

 extreme northern part of the state. 



Sah-elimis namayciish (Walbaum) — lake trout. Occa- 

 sional in Lake Michigan. 



Osmeridae — smelts 

 Osmeriis mordax (Mitchill) — American smelt. Gen- 

 erally distributed along the shore of Lake Michigan. 



Umbridae — mudminnows 

 Umbra Iniii ( Kirtland ) — central mudminnow. Gen- 

 erally distributed in the extreme northern part of Illinois; 

 occasional throughout the northern third; sporadic in the 

 southern third; absent from central Illinois. 



Esocidae — pikes 



Esox americaniis vermicnlatus Lesueur — grass pickerel. 

 Generally distributed throughout the southern and east- 

 central parts of Illinois; sporadic in the extreme northern 

 and western parts. 



Esox hicins Linnaeus — -northern pike. Occasional 

 tlirougliout the nortlitrn third of the state; sporadic in the 

 middle Illinois River. 



Anguillidae — eels 



Anguilla rostrata (Lesueur) — American eel. Sporadic 

 throughout Illinois, except the extreme nortlieastern part. 



Clupeidae — herrings 



Alosa alaha7>tae Jordan & Evermann — Alabama shad. A 

 record, based on one specimen from the Mississippi River 

 in Monroe County, needing substantiation. 



Alosa cbrysocbloris (Rafinesque) — skipjack herring. 

 Occasional in the Wabash, Oliio, lower Mississippi, and 

 Illinois rivers and in the lower reaches of their major tribu- 

 taries; sporadic in the upper and middle Mississippi River. 



Cyprinidae — minnows and carps 



Car>ipostoma aiiomalitm (Rafinesque) subspecies — 

 stoneroller. Generally distributed throughout the state, ex- 

 cept in the block of south-central counties just north of 

 the Shawnee Hills. 



Carassiiis auratiis (Linnaeus) — goldfish. Generally dis- 

 tributed in the upper Illinois River and along the shore 

 of Lake Michigan; sporadic elsewhere in the state. 



Chrosomiis cryihrogaster (Rafinesque)- — ^siHithern red- 

 belly dace. Generally distributed throughout the nortiiern 

 third of Illinois; i.solated colonies in extreme east-central 

 and west-central Illinois. 



