Erogala pyrrhomelas (Cope) 

 (7\[otropis pyrrhomelas (Cope) ) 

 Anal rays seven to nine 235. 



235. Mouth very oblique; peritoneum black 236. 

 Not so 237. 



236. Lateral stripe obscure; eye very large in head; central states 



Hyhopsis hoops Gilbert Bigeye Shiner 

 Jslotropis boops Gilbert 

 (Includes H. schumardi (Gilbert) ) 

 Lateral stripe conspicuous; eye less conspicuous; northern states from 

 N. Y. to N. Dakota 



Hyhopsis anogenus (Forbes) Pugnose Shiner 

 T^otropis anogenus Forbes 



237. Anal rays usually seven 238. 

 Anal rays usually eight or nine 24 L 



238. Length about three and one-half times depth; pharyngeal teeth 4-4; S. D. 



to Kansas 



Codoma tope\a (Gilbert) 

 Jsiotropis tope\a (Gilbert) 

 Length about five times depth 239. 



239. With a fine dark lateral stripe; pharyngeal teeth 4-4; N. Y. to N. 



Carolina 



Hyhopsis procne (Cope) Swallowtail Minnow 

 7\[otropsis procne (Cope) 

 Lateral stripe very faint to absent 240. 



240. Pharyngeal teeth in one row (4'4) ; dorsal fin beginning before start of 



pelvics; N. Y. to Minn, and southward to Texas 



Hyhopsis deliciosa (Girard) Straw-colored Minnow 

 'Xlotropis deliciosus (Girard) 

 Pharyngeal teeth 1-4-4-2; dorsal fin above pelvics; N. D. to Penna. and 



Kansas 



Hyhopsis hlennius (Girard) River Shiner 



241. With a dark spot at the base of the tail fin 242. 

 No dark spot at the base of the tail fin 245. 



242. Length over five times depth; Tennessee River system 



Hyhopsis spectrunculus Cope 

 (hlotropis spectrunculus (Cope) ) 

 Length less than five times depth 243. 



243. Dorsal fin plain colored; N. Y. to N. D. and southwards 



Hudsonius hudsonius (Clinton) Spottail 

 Klotropis hudsonius (Clinton) 

 With a dark band at base of the dorsal fin 244. 



244. Dorsal fin of males red; length four and one-quarter times the depth; 



Alabama River valley 



Erogala trichroistia (J. 6? G.) 

 (hlotropis trichroistia (J. d? G.) ) 



285 



