1870.] 4b d [Cope. 



49. PHOTOC4EKIS LEUCOFS, Cope. 



Var. aaaa. Depth into length to basis caudal fin G.5 to 7 times ; head 



fi-7 



in same 4.5 times ; scales ^}_ ahundant in the French Broad River. 



Var. aaaa.(f. Depth into length 5 times; length head into same 4 times; 

 scales ^ color silvery, a double row of black specks on lateral line. Very 



3 



•abundant in the head waters of the Catawba River. This fish, when taken 

 from the water, always sustains a rupture of some of the branches of the 

 ophthalmic artery by which blood is suffused beneath the cornea. The 

 altei-ed condition of pressure on transfer to a rare medium, is no doubt the 

 cause. 

 Also from the Neuse River, near Raleigh. 



50. Photogekis telescopus. Cope. 

 Loc. Cit. 165. 



Very abundant in the French Broad River ; a variety with large eye in 

 a tributary of the Clinch. 



51. Photogekis leuciodtjs. Cope. 

 Loc. Cit. 165. 



Abundant in the waters of the tributaries of the French Broad River. 



52. Photogekis pyrrhojielas. Cope. 



Spec. nova. 



This species is in most characters related to the Hypsilepides, and it 

 combines remarkably the characters of the H. cornutus, H. analostanuF, 

 and H. diplsemia. Thus it has the head of the first, the form, with 

 milky paired, and black spotted dorsal of the second, and the long anal of 

 the third. As the teeth are v/ithout masticatory surface, I refer it for 

 the present to this genus. 



The extremity of the muzzle descends obliquely to the moutb, which is 

 itself oblique, the end of the maxillary descending to a line from the an- 

 terior margin of the orbit. The mandibular and premaxillary margins 

 are in the same vertical line when the mouth is closed. The diameter of 

 the eye ball enters the length of the head 3.6 times, and 1.25 times in 

 interorbital width. Length of head four times in length, depth about the 

 same. The body is therefore rather deep and compressed. Teeth shai-p, 

 hooked, 4.1—1.4. Radii D. I. 8, A. I. 10. V. 8. The extremities of the 

 pectorals barely reach the ventrals, and the ventrals attain the anal. 



Scales 34-fi ; most of them with narrow exposed surfaces, as in typical 



3 



Hypsilepis. Total length 40 1. ; to orbit, 2.81.; to origin dorsal fin 16.51., 

 to origin caudal 32.71. 



In coloration this is again one of the finest of our Cyprinidse. Specimens 

 taken in autumn were steel blue above, the scales darker edged ; the belly 

 silver. The muzzle and upper lip to the end of the maxillary, are vermil- 



