Io8 VERTEBRATE ANIMALS OF THE UNITED STATES 



do Spines of anal fin 3. 



Ci Teeth present on the tongue 6. Chcenobryttus, 



to No teeth on the tongue. 



fi Lower pharyngeals narrow with sharp teeth. 



gi Supplementary maxillary well developed. . 10. Apomotis. 

 g2 Supplementary maxillary rudimentary or 

 wanting. 



hi Lateral incomplete 11. Lethogrammus. 



h.1 Lateral hne complete, 

 ii Palatines with teeth. 



ji Opercle extended behind as a long 



flap 9. Lepomis. 



jo Opercular flap short and stiff 12. Sclerotis. 



io Palestines without teeth 13. Xenotes. 



14. Allotis. 



15. Helioperca. 

 £2 Lower pharyngeals broad and with blunt teeth 16. Eupomolis. 



ho Spinous and soft-rayed portions of dorsal fin separated by 

 a deep notch; depth of body about one-third the length; 

 black bass. 



Ci Maxillary not extending back of the eye (Fig. 54) 17. Micropterus. 



02 Maxillary extending back of the eye (Fig. 54) 18. Huro. 



1. Centrarchus Cuvier & Valenciennes. Body short, deep and 

 strongly compressed; mouth large, with a projecting lower jaw; gill 

 rakers very long; tins very large; hinder margin of tail concave : i species. 



C. macropterus (Lacepede). Round sunfish. Length 150 mm.; 

 head 3.25; depth 2; color yellowish green, with rows of dark spots along 

 the sides; rays of dorsal fin XI to XIII, 12 to 14; anal VII or VIII, 15; 

 scales 5-44-14: Virginia to Louisiana; northward in the Mississippi 

 Valley to southern Illinois, in clear water; locally common. 



2. Pomoxis Rafinesque. Body strongly compressed, elliptical; 

 mouth large, oblique; lower jaw projecting; supplementary maxillary 

 well developed; scales large, feebly ctenoid; fins large; gill-rakers very 

 long; hinder margin of tail concave: 2 species. 



P. annularis Raf. Crappie. Length 300 mm.; head 3; depth 2.3; 

 color silvery olive, mottled with dark green and with indistinct vertical 

 bars; fins very high; rays of dorsal fin VI, 18; anal VI, 18; scales 36 

 to 48; body rather elongate: Great Lakes to Kansas and Texas; 

 introduced on Pacific Coast; very common in sluggish streams and 

 ponds. 



P. sparoides (Lacepede). Calico bass. Length 300 mm.; head 3; 

 depth 2.2 ; color silvery olive, mottled with green or black spots; median 

 fins with dark and pale spots in rows; rays of dorsal fin VII or VIII, 15; 

 anal VI, 17 or 18; scales 40 to 45; body elevated; fins very high: New 



