236 



FISHES OF ILLINOIS 



ee. 



f. 



ff. 



dd. 



Tongue and pterygoids* with teeth ; maxillary reaching past pupil 



Chaenobryttus. 



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 long, 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 Lepomis. 



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 rav). 

 Eupomotis. 



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

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

 longest; operculum ending in two flat points Micropterus. 



vo 



;.---- uph 



Fig. 56 



Fig. 57 



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

 of a typical sunlish: dn, dentary; ecp, ectopterygoid; e?ip, 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. 



