T^othonotus rufilineatus (Cope) 

 (Poecilichthys rufilineatus Cope) 



357. With sixteen to eighteen dorsal spines 358. 

 With less than fourteen dorsal spines 359. 



358. Spinous portion of the dorsal lin higher than the soft portion; California; 



Family Embiotocidae (About twenty species, mostly marine) 

 Hysterocarpus tras\i Gibbons Surf-fish 

 Spinous portion of dorsal lower than the soft portion; Rio Grande Val' 

 ley; Family Gchlidae (Many tropical species) 



Herichthys cyanoguttatus B. & G. Cichlid 

 (Heros cyanoguttatus (B. 6? G.) ) 



359. Lateral line pores extending on to the tail fin; Great Lakes to Texas; 



Family Sdaenidae (Many marine species) 



Aplodinotus grunniens Raf. Sheephead, Drum, Thunderpumper 

 Lateral line pores not extending on to the tail fin 360. 



360. Spinous portion of dorsal fin almost disconnected from, and equal to or 



higher than, the soft portion 36 L 



Spinous portion of dorsal fin confluent with or lower than the soft por- 



tion 363. 



36L Mouth very large, reaching below the back of the eye in the adult; with 

 a broken dark band along each side; Great Lakes to Texas; introduced 

 into many other localities; Family Centrarchidae (part) 



Huro fior^dana (LeSueur) Large-mouthed Black Bass, 



Green Trout 

 Micropterus salmoides (Lacepede) 

 Mouth smaller, reaching below the front of the eye; sides plain or with 

 six or seven dark stripes; Family Moronidae (part) 362. 



362. With six or seven black stripes, interrupted posteriorly; lower Mississippi 



Valley 



Chrysoperca interrupta (Gill) Yellow Bass 

 hlorone interrupta Gill 

 No dark stripes; Atlantic Slope 



Morone americana (Gmelin) White Perch 



363. No lateral line; outline of tail convex; less than two inches long; Family 



Elassomidae 364. 



Lateral line half or more complete; tail various; si2;e various; Family 



Centrarchidae Sunfishes and Basses 365. 



364. Scale count more than 34; 111. to Ala. and Texas 



Elassoma zonatum Jordan Pigmy Sunfish 

 Scale count less than 34; Georgia and Florida 



Elassoma evergladei Jordan Everglades Pigmy Sunfish 



365. With five to eight anal spines; dorsal fin somewhat elongate, but not 



twice as long as anal 366. 



With three (rarely four) spines in the anal fin; dorsal fin more elongate, 



often more than twice as long as the anal 37 L 



366. Dorsal spines five to eight 367. 

 Dorsal spines ten to fourteen 368. 



301 



