78 



Family Si:i:i{axii>.i; (Thk Ska J{ass). 



RntxHK cttr!is(>i)K (Ratinesque). — White Hass. 



Body deep, appearance much as in the Centrarchid;e. Color silvery, with a variable 

 number of narrow dusty lines on the sides. Anal spines graduated in length. An excel- 

 lent food tish. 



J\'ot uncommon in the Illinois River; found also i-n tlie Mississip;)i and in lar>.'e streams 

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



^[<»^onc iiitern(})t4i (iill. — Striped Hass: Yellow JSass: Streaker. 



A fish similar to the last, but with more distinct markinj2:s on the sides, tlie dark lines 

 being intermitted below the lateral line and near the front of the anal fin. First anal spine 

 longer than the rest. Distributed like /Coccus chrys.ps. 



Family Sci.icxid.k (Thk Choakkus). 



Aplinrniiitits iiniiniicnx Ratinesque. — Grunter; Sheepshead: White I'erch. 



Ventral line almost sttaight; back much arched; color silvery; dorsal fin long; the lateral 

 line extending to the end of the caudal tin on the middle ray. An excellent food fish. 

 Distributed as the two preceding species; also reported from the Saline River. 



F.\MILY COTTID.K (TlIK' SrUI.IMNs). 



Cnttnx icUtlops (Ratinesque). — Millers Thumb; Mulile-jaw; Spring- fish. (4()t)) 



A scaleless tish with loose skin about the head; spinous and soft dorsal tins; a spine and 

 four rays in the ventral fin. 



Founc4 occasionally in springs and in the clear water of creeks. Taken most al)undantly 

 in southern Illinois in early collections. 

 CottKs ricei Nelson. 



Described in 1876 from two specimens which were taken from deep water of Lake Michi- 

 gan off Evanston. Four ventral rays. 



T'nnikh'd htoiiUoili Hoy. 



From deep waters of Lake Michigan. Three ventral rays. 

 Vninidea IkujI Piitnam. (411) 



From deep waters of Lake Michigan. Three ventral rays. 



Family Uadid.e (The Cods). 



Lotti mdciilosii (Le Sueur). — Burbot; Ling; Lake Lawyer. 



Readily known by its elongate body, short first and long second dorsal, long anal, and 

 single barbel on chin. The fresh-water representative of the cod family. 



Not uncommon in the large lakes of North America. Occasionally found in the streams 

 of the Mississippi valley. 



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