90 VERTEBRATE ANIMALS OF THE UNITED STATES 



8. Rabida Jordan. Mad Toms. Body similar to Schilbeodes; 

 pectoral spines serrate behind: several species; pectoral spines able to 

 give a painful wound. 



R. exilis (Nelson). Length loo mm.; head 4; depth 5 to 6.5; color 

 yellowish, mottled; anal fin with 14 to 17 rays: Wisconsin to Kansas; 

 common. 



R. insignis (Richardson). Mad-tom. Length 250 mm.; head 4.25; 

 depth 6; color dark brown, somewhat mottled; lins dark edged; anal fin 

 with 14 to 16 rays; upper jaw projecting: New York to South Carolina; 

 very common in coastal streams. 



Fig. 42. — Schilbeodes gyrinus (from Fishes of Illinois). 



R. miura (Jordan). Length 100 mm.; head 4; depth 5; color 

 mottled black and gray, with 4 black blotches; top of head, tip of 

 dorsal, middle of adipose and edge of caudal fins black; adipose fin with 

 a deep notch, but connected with the tail fin; anal fin with 13 to 15 rays: 

 Mississippi Valley and tributaries of Lake Michigan; common. 



R. leptacantha (Jordan). Length 75 mm.; body slender; color 

 yellowish, mottled; spines short; rays of anal fin 14: Gulf States, in 

 sandy streams; rare. 



R. gilherti (Jordan & Evermann). Length 100 mm.; body slender; 

 color yellowish; base of tail fin and most of its lower lobe black; rays of 

 anal fin 15; dorsal fin black at base: Roanoke River; common. 



R. eleuthera (Jordan). Length 100 mm.; head 3.8; color plain 

 brownish, with faint saddle-like blotches on the back; rays of anal fin 

 13: Mississippi Valley; often common. 



Order 6. Haplomi. — Pike and pickerel. Soft rayed fish with 

 anterior vertebrae distinct and without Weberian ossicles; no adipose 

 fin; pseudobranchiae wanting or glandular; body covered with 

 cycloid scales; ventral fins abdominal; head usually more or less scaly; 

 air bladder with pneumatic duct: 2 families of mainly fresh water 

 fishes. 



