FISHES 75 



5-36-2, 12 before the dorsal fin; rays of anal fin 7: Ohio and Tennessee 

 basins to Iowa and the Ozark region; common towards the south in 

 cold streams. 



H. hudsonius (DeWitt Clinton). Spot-tail; shiner. Length 150 

 mm.; head 4.75; depth 4; color very pale; sides with a broad silvery 

 band; usually a black spot at the base of tail fin; teeth i or 2, 4-4, o, i 

 or 2; scales 5-39-4, 18 before the dorsal fin; body elongate; head short; 

 muzzle blunt: Dakota to New England; southward in coastwise 

 streams to Georgia; in large rivers and lakes; abundant In the Great 

 Lakes; very variable. 



35. Cyprinella Girard. Teeth similar to Hybopsis; scales closely 

 imbricated, 31 to 44 in the lateral line; dorsal fin usually behind the 

 ventrals; anal fin with 8 or 9 rays: 15 species. 



C. lutrensis (Baird & Girard). Redfin. Length 75 mm.; teeth 

 one-rowed, 4-4; head 3.6; depth 3 to 4; color of male steel blue; male 

 tuberculate in spring with belly and fins red; a conspicuous violet cres- 

 cent behind the shoulder; females plain greenish; scales 6-35-2; back 

 arched; body compressed: southern Illinois to Dakota; southward to 

 the Rio Grande; very common in clear brooks southward. 



C. macrostoma (Gir.). Head 4; depth 4.1; color brownish; sides 

 silvery; teeth i, 4-4, i; rays of anal fin 9; scales 36: Kansas to the Rio 

 Grande. 



C. stigmatura (Jord.). Spotted tail. Length no mm.; head 4.5; 

 depth 4.75; color pale olive with a large black spot at the base of the 

 tail fin; scales 7-42 to 44-3, 20 before the dorsal fin; body elongate; a 

 large blotch on the dorsal fin: Alabama basin; very common. 



C. cercostigma Cope. Like C. stigmatura except that there are 

 37 to 39 scales in the lateral line: sandy streams tributary to the Gulf, 

 from the Pearl to the Nueces Rivers; abundant. 



C. trichroistia (Jordan & Gilbert). Length 85 mm.; head 4.1; 

 depth 4.25; color steel blue above; sides white, with a large black spot 

 at the base of the tail fin; dorsal fin red with white tips and a broad 

 dusky band at its base; belly and lower fins white; scales 6-42-3: 

 Alabama basin; common. 



C. callistia (Jord.). Length 100 mm.; head 4.2; depth 4.6; color 

 very dark blue; sides silvery violet, with a reddish lateral band; belly 

 and lower fins white; dorsal and caudal fins red, with a white tip; 

 caudal spot present; scales 5-40-3: Alabama basin. 



C. eurystoma (Jord.). Length 100 mm.; head 4.25; depth 4.3, 

 color olivaceous; sides silvery, with a black caudal spot; belly and lower 

 fins white; scales 6-39-3: basin of the Chattahoochee River. 



