102 ICHTHYOLOGIA OHIENSIS 



tail : lateral line curved downwards and only anterior. 

 Dorsal and anal fins elongated. Dorsal 8, and anal 7 

 rays. 



A very distinct and insulated species, intermediate 

 between [^(^J this and the foregoing genus. It might 

 probably form a peculiar genus and be called Chro- 

 somiis erythrogaster or Kentucky Red belly. I saw it 

 in the Kentucky river. Length from four to six 

 inches. Tail forked as in all this family, and yellow 

 as well as the dorsal fin, and with twenty rays. All 

 the other fins are whitish. Head yellow above, sil- 

 very beneath, iris golden, the brown stripe goes 

 across the eyes. Pectoral fins trapezoidal, with 12 

 rays, not reaching the abdominal fins. Lateral line 

 reaching no farther than the dorsal fin. Anal fin 

 narrow. It is called Red belly Chub. 



2d Subgenus. Luxilus. 



Mouth rather large, with small flat lips, jaws equal, 

 scales large. 



[II. 238] 40th Species. Goldhead Shiner. Luxi- 

 lus ckrysoccphalus. Luxile chrysocephale. 



Diameter one fifth of total length, silvery with 

 golden shades on the sides, head gilt, back and nape 

 dark olivaceous ; lateral line curved downwards, pec- 

 toral fins reaching the abdominal. Dorsal and anal 

 fins with nine rays. 



Vulgar names, Gold Chub, Shiner, Goldhead, &c. 

 Length six inches. It is foimd in the Kentucky, 

 Ohio, Cumberland, Green river, &c. Iris golden. 

 Fins fulvous, the pectoral golden large with 14 rays: 

 tail with 24. It resembles the common Shiner 

 or Butterfish of Pennsylvania, Cyprinus chrysoleucos 

 Mitchell; but that fish is a Rutilus, having nine 



