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Prom Pistakee Lake; Green River atGenoseo; Pecumsaueum Creek In LaSalle county; 

 Salt Creek, Lincoln; Little Fox River. White county; and E. Dutchman's Creek, Vienna. 

 Quite abundant in Pecumsauffum Creek. 



Etheostoma jessice (Jordan & Brayton). 



A quite common darter, of brown color, with a curved band of orange-red on the spinous 

 dorsal. 



The common darter of large sluggish streams; not found north of the Illinois basin and 

 not common in southern Illinois, except in the south portion of the Wabash basin. 



Etheostoma cosruleum Storer. — Blue Darter; Rainbow Darter; Soldier- fish. 



The males are strikingly marked with red and blue, which colors appear in bands on the 

 sides and on the dorsal lin. The females are plainer, with drab and olive bands. Body 

 quite thick and deep; head large. Common throughout the State. 



Etheostoma tippecanoe Jordan & Evermann. 



A few specimens have been provisionally referred to this species, but are qaestionable. 



Etheostoma obeyense Kirsch. 



Several specimens have been found in Hardin county which correspond to descriptions 

 of this Kentucky species. 



Etheostoma squamieeps Jordan. 



This fish is much like the next in general appearance, with head of similar form and of 

 brownish color. The body is much heavier than is common among darters. 



Taken in five localities in Hardin county, and once near AnnajjaJQnion county. 



Etheostoma flabellare Rafinesque. 



Body long; lower jaw projecting; mouth large. Color decidedly brownish; males with 

 an orange-colored spinous dorsal, the spines of which are tipped with fleshy knobs; fins in 

 both sexes large and barred with black in delicate pattern. Northern specimens have the 

 color on the sides arranged in parallel lines of brown, and are known as variety lineolatum 

 (Agassiz). 



This species is taken occasionally from creeks and small rivers in all parts of the State. 



Boleichthys fusijormis (Girard). (366) 



A fine-appearing little fish. Body deep anteriorly; caudal peduncle slender; profile 

 much decurved; lateral line not reaching further back than the second dorsal, placed high, 

 and parallel with the line of the back. Rare, but widely distributed. 



Microperca punctulata Putnam, — Least Darter. (368) 



A tiny fish, among the smallest of the vertebrates; commonly not more than an inch in 

 length and ordinarily escaping the collector. Known from all other darters by the absence 

 of the lateral line. 



Most frequently taken from the lakes and streams of northeastern Illinois. Taken also 

 from Mackinaw Creek in Woodford county. Skillet Fork in Wayne county, and Drury Creek 

 in Union county. 



Family Serranid^ (The Sea Bass). 

 Boecus chrysops (Rafinesque). — White Bass. 



Body deep, appearance much as in the Centrarchidfe. Color silvery, with a variable 

 number of narrow dusky lines on the sides. Anal spines graduated In length. An excel- 

 lent food fish. 



Not uncommon in the Illinois River; found also in the Mississippi and in large streams 

 tributary to it and the Illinois. Not reported from the Wabash basin. 



Morone interrupta Gill. — Striped Bass; Yellow Bass; Streaker. 



A fish similar to the last, but with more distinct markings on the sides, the dark lines 

 being interrupted below the lateral line and near the f rout ot the anal fin. First anal spine 

 longer than the rest. Distributed like Jioccus chrysop-i. 



