236 



FISHES OF ILLINOIS 



ff. 



dd. 



Tongue and pterygoids* with teeth ; maxillary reaching past pupil 



Chsenobryttus. 



Tongue and pterygoids toothless ; maxillary in most species short of middle 

 of orbit (to middle in L. cyanellus). , 



Lower pharyngeals (Fig. 64 and 65) narrow, the width in the length of 

 toothed portion about 3, outer margin straight or weekly concave, the 

 teeth Jong, slender, and acuminate; pectorals never reaching beyond 

 vertical from base of anal; opercular flap without red, or if red is present, 

 with the color forming a border and not a roundish spot Lepomls. 



Lower pharyngeals (Fig. 66 and 67) broad, the width in the length of the 

 toothed portion about 2, the outer margin a double curve; teeth short, 

 bluntly rounded or paved; opercular flap with a conspicuous roundish 

 red spot -on its lower posterior corner or (in case the red spot is wanting) 

 the pectorals reaching past front of anal (to a vertical from last anal ray). 

 Eupomotis. 



Body comparatively elongate, depth about J length; dorsal fin deeply 

 emarginate, the shortest spine behind middle of fin from J to J height of 

 longest; operculum ending in two flat points Micropterus, 



;.--- uph 



Fig. 56 



Fig. 57 



Roof (56) and floor (57) of mouth of Ambloplites rupestris to show dentition 

 of a typical sunfish; dn, dentary; ecp, ectopterygpid ; enp, entopterygoid 

 hy, hyoid; Iph, lower pharyngeal; pi, palatine; pmx, premaxillary ; tn 

 tongue; uph, upper pharyngeal; vo, vomer. 



*See Fig. 56 and 57 for illustration of full dentition of a sunfish. 



