232 ON THE DISTRIBUTION OF FRESH-WATER FISHES 



measurement I gave in Monogr. Cjprinidse Pennsylvania. The colors were brownish 

 orange above and below, with a burnislied black lateral band. 



In the H. ruhricroceus the combination of colors is very fine, and would render it a 

 great ornament to aquaria. A bknsh-leaden band extends from the superior angle 

 of the operculum to the middle of the caudal, above which the color is brownish- 

 orange ; below it a narrow golden band is sometimes present, and the length of the 

 lateral line vermillion. The same color extends over the chin, both lips, and the 

 ends of the muzzle ; in highly colored specimens over the pectoral region also ; lower 

 regions generally rich yellow. Iris and preorbital bone pearly blue. 



The dorsal fin is nearer the basis of the caudal than to the end of the muzzle ; the 

 caudal peduncle contracted behind anal. Muzzle a little compressed, end of maxillary 

 attaining line of orbit. Operculum long as its anterior margin. The pectoral fins 

 barely attain the ventrals, and the latter reach the vent. The concentric lines on 

 the scales of this fish are stronger than the radii; there are 19 rows anterior to the 

 dorsal fin. The isthmus is not of the narrowest type. 



Lepigth 3 inches ; depth head at middle orbit o'5 lines ; of body at dorsal 6 lines ; 

 at last anal i-ay 3"1 lines. 



This fish is abundant in the same localities as the last, and several small specimens 

 were taken near the mouth of Tumbling Creek, which rises in the Clinch Mountain', 

 and flows into the north fork of the Holston. Many specimens are infested with the 

 Achlya. 



Hybopsis lacertosus Cope, sp. nov. 



This is one of the largest species of the genus, and, though taken at the same time 

 as the last, displayed none of its bright colors. It is particularly characterized by its 

 broad and deep head, and large scales. The mouth is wide, measured from canthus 

 to canthus longer than from same to end of symphysis of mandible. The interorbital 

 width is equal to the longitudinal diameter of the large eye, which latter exceeds the 

 vertical diameter. The pectoral fins do not reach the ventrals. The concentric 

 strise of the scales are much more delicate than in the H. ruhricroceus, and are 

 interrupted by the strong radial grooves. 



Total length 4 in. 4 lin. ; length of head 10-5 lin. ; depth of do. posteriorly 7'5 ; 

 depth at last anal ray 4 lin. 



Silvery, dorsal region and top of head dusky. 



Habitat. — Four specimens from Bear Creek, middle fork of Holston River, Va. 



ALBURNELLUS Girard. 



Alburnel&us .jaculus Cope. 

 Trans. Amer. Philos. Soc. 1866, 387. 

 This species abounds in the Kanawha River and its principal tributaries, seeking 



