367. Dorsal spines usually six; distance from eye to dorsal fin definitely longer 



than base of dorsal fin; body with dark spots arranged in bars; Great 

 Lakes to Texas, and introduced into many other localities 



Pomoxis annularis Raf . White Crappie, SaC'a'lait 

 Dorsal spines usually seven or eight; distance from eye to dorsal fin 

 about equal to base of dorsal fin; body with dark spots; Great Lakes 

 to Florida and Texas; introduced on the Pacific Slope and elsewhere 



Pomoxis sparo-ides (Lacepede) Calico Bass, Black Crappie 



Pomoxjs nigro-maculatus (LeSueur) 



368. Dorsal fin only slightly longer than the anal; anal spines seven or eight, 



anal rays fifteen; small, becoming six inches; sides with lengthwise 

 rows of dark spots; southeastern states and lower Mississippi Valley 

 Centrarchus macropterus (Lacepede) Round Sunfish, Flier 

 Dorsal fin decidedly longer than the anal; anal spines five to seven, anal 

 rays ten 369. 



369. Tail fin convex in outline; anal spines five; small, becoming six inches; 



sides obscurely striped; Atlantic Slope 



Acantharchus pomotis (Baird) Mud Sunfish 

 Tail fin emarginate; anal spines six or seven; larger 370. 



370. Sides with lengthwise rows of dark spots; getting to be a foot long; New 



England south and west to Arkansas 



Ambloplites rupestris (Raf.) Rock Bass, Redeye 

 Sides with dark bars; getting to be almost two feet long; California 

 Archoplites interruptus (Girard) Sacramento Perch 



37 L Outline of tail convex; two to five inches long; Atlantic Slope 372. 



Tail emarginate or forked 374. 



372. With ten somewhat graduated spines in the dorsal fin, the fourth and 



fifth definitely longer than the eighth, ninth and tenth; pectoral fins 

 reaching about to the front of the anal fin; about four inches long; 

 N. J. to Maryland 



Mesogonistius chaetodon (Baird) Black-banded Sunfish 

 With nine dorsal spines, the fourth and ninth about equal; pectoral fins 

 reaching back about to the middle of the anal fin 373. 



373. Black spot on the operculum more than one-half the size of the eye; 



about five inches long in the adult; Mass. to Florida 



Enneacanthus ohesus (Girard) Little Bream 

 Black opercular spot less than one-half the size of the eye; not over three 

 inches long; N. Y. to Florida 



Enneacanthus gloriosus (Holbrook) Blue-spotted Sunfish 



374. Depth usually less than two-fifths the length (not including the tail fin) 



in the adult; operculum with two blunt points behind; mouth reaching 

 under or behind the eye; adults two feet or more long Basses 375. 

 Depth seldom less than two-fifths the length in the adult; operculum with 

 an unnotched flap behind; mouth large or small; small to moderately 

 sized fishes; often brilliantly colored Sunfishes 378. 



375. Dorsal fin with a deep notch; mouth extending to a point slightly behind 



the eye in adult specimens; soft dorsal and anal fins not scaly; with a 



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