APRIL, 1910. FISHES OF CHICAGO MEEK AND HILDEBRAND. 315 



Eupomotis gibbosus (Linnaeus). PUMPKIN-SEED; RED-EARED SUN- 

 FISH. 



Head 2.8 to 3.2; depth 2.0 to 2.5; D. x, n or 12; A. in, 10 or 

 ii ; scales 35 to 40. 



Body short, compressed, the dorsal region elevated; mouth small, 

 maxillary reaching front of orbit, its length 2.6 to 3.3 in head; no 

 supplemental bone; eye 3.5 to 4.2 in head; about equal to length of 

 the snout; opercle with bony portion distinct from the broad, paler, 

 fleshy portion; gill rakers short and soft; pectorals rather long, i.o 

 to i.i in head; 4 or 5 rows of scales on cheeks. 



Color olivaceous to greenish; sides with yellowish or copper-col- 

 ored roundish blotches; cheeks and opercles crossed by 4 or 5 wavy 

 lines; opercular flap black with a roundish red or orange spot on 

 lower posterior angle; dorsal fin irregularly barred with brownish 

 to orange blotches. 



Length 5 to 8 inches. 



This fish ranges from the Great Lake Region to the Atlantic Coast 

 streams and northern Mississippi Valley. 



Fox River, McHenry, Illinois; Dead River, Beach, Illinois; Des 

 Plaines River, Berwyn, Illinois; Calumet Lake, Pullman, Illinois; 

 Wolf Lake, Roby, Indiana; Lake George, Indiana; Lake Michigan 

 and Calumet River, Millers, Indiana; Lagoon, Buffington, Indiana; 

 Lake Michigan and Lagoon, Pine, Indiana; Calumet River, Clark, 

 Indiana. 



Genus Micropterus Lacepede. 

 BLACK BASS. 



Body elongate, the dorsal region not much developed; mouth very 

 large; maxillary with well developed supplemental maxillary; pre- 

 opercle entire; opercle emarginate behind, ending in 2 flat points; 

 teeth on jaws, vomer, and palatines; tongue usually without teeth; 

 spinous and soft dorsals divided by a deep notch ; anal spines 3. 



a. Mouth moderate, the maxillary scarcely reaching posterior 



margin of orbit; 10 to 12 rows of scales between lateral line 



and dorsal fin. dolomieu, 316 



aa. Mouth larger, the maxillary reaching past posterior margin of 



orbit; 8 to 9 rows of scales between lateral line and dorsal fin. 



salmoides, 316 



