216 ' REPORT OF STATE GEOLOGIST. 



Hybopsis hyostomus (Gilbert). 



Nocomis hyostormis, Gilbert, 1884, 23, 203. 



Form elongated and quite slender, the depth being contained in the 

 length five and one-half times. Head long, its length in that of the 

 body four times ; the snout long and projecting considerably beyond the 

 mouth. Eye rather large, three and one-half times in head. Mouth in- 

 ferior, the maxillary provided with a long barbel. Dorsal rays, eight ; 

 anal, eight. Scales along the lateral line, thirty-seven; thirteen in front 

 of the dorsal. Color silvery, the upper surface with numerous minute 

 black specks. Length about two and one-half inches. 



Distributed from Indiana to Alabama. In Indiana it has been taken 

 in White River at Bedford (23, '84, 203); Gosport, Vincennes and New 

 Harmony (^, '88, 48); Wabash River at Delphi {23, '88, 163); Eel 

 River at Logansport (^, '94, 37). 



Hybopsis watauga (Jordan and Gilbert). 



Jordan and Gilbert, 1888, 4, pi. XIV, Fig. 6; 23, 1888, 356. 



This species is a ch^se relative of that next described, H. di'sswiilis. 

 Body elongated, little compressed, the back little elevated. Head flat 

 on top. The snout blunt ; the anterior profile decurved. Snout in the 

 length of the head two and three-fourths. Mouth inferior, horizontal, 

 the maxillary reaching to opposite the posterior nostril. Barbels evi- 

 dent. Eye in the head three and one-fourfb. Depth in the length five 

 and one-half to six. Dorsal rays, seven ; anal rays, seven. Scales, 

 4-52-4; about twenty to twenty-four in frv.nt of the dorsal fin. Front 

 of the dorsal in front of the insertion of the ventrals. Teeth 4-4. Color 

 olive; sides with a dark bluish stripe, which is prolonged around the 

 snout. On this lateral stripe are frooa eight to teii rounded blackish 

 spots not so large as the eye. Some additional spots on the back. Fins 

 pale. Length four inches. 



Virginia and North Carolina westward to Iowa and Arkansas. Has 

 been taken in the Tippecanoe River at Marshland, Fulton County (4, 

 '88. 158); White River at Gosport and Indianapolis {23, '88, 356) ; Eel 

 River basin in Northeastern Indiana (4, '94, 37); Terre Haute (2^, '93, 91). 



This species difi'ers from H. dissimilis in having a larger number of 

 scales along the lateral line, more rows of scales in front of the dorsal, 

 and in having a slenderer form. 



