FISHES 115 



C2 Hinder margin of tail mostly concave, 

 di Spines of anal fin 5 to 8. 



Ci In the region east of the Rockies 4. Ambloplites. 



Co In the region west of the Rockies 5. Archoplites. 



d2 Spines of anal fin 3. 



ei Teeth present on the tongue 6. Chcenobryttus. 



62 No teeth on the tongue. 



fi Lower pharyngeals narrow with sharp teeth . 9. Lepomis. 

 fo Lower pharyngeals broad and with blunt 



teeth 10. Eiipomotis. 



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



a deep notch ; depth of body about one-third the length .11. Micropterus. 



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

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

 rakers very long; fins very large; hinder margin of tail concave: i 

 species, 



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

 head 2.75; 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 or 6-38 to 45-15: Virginia to Florida and 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, 15; anal VI, 18; scales ^^6 

 to 48; body rather elongate: Vermont to Dakota, southward to Alabama 

 and Texas; 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 

 York to Texas, in coastwise streams; the basins of the Great Lakes and 

 the Mississippi; common in sluggish streams and ponds. 



3. Acantharchus Gill. Body rather elongate, not much compressed 

 or elevated; mouth rather large, oblique; scales large, cycloid; tail fin 

 rounded; supplementary maxillary present: i species. 



A. pomolis (Baird). Mud sunfish. Length 150 mm.; head 2.6; 

 depth 2 ; color very dark greenish with several indistinct wide dark lateral 



