850 FISHES—CYPRINIDA. 
in the streams running from the hills on the Ohiosgide of the same river. 
It has a wide distribution in the Alleghany region of the south. The 
species is subject to considerable variation. 
72. MINNILUS ARIOMMUS (Cope) Jordan. 
Big-eyed Shiner. 
Prhetogenis ariommus, COPE, Trans. Am. Philos. Soc., 1866, 388; Proc. Acad. Nat. Sef. 
Phila., 1867, 164. 
Cliola ariomma, JORDAN, Man. Vert., 2d Ed., 1878, 298. 
Episema ariomma, JORDAN, Bull. Is. Lab. Nat. Hist., 1878, 60. 
Description.—Body stout, moderately elevated, somewhat compressed; head heavy, 
broad above, the snout moderate, somewhat decurved; mouth moderate, oblique, its 
jaws equal, the upper lip on a level with the middle of the pupil, the maxillary reaching 
the front of the eye; eye very large, two and three-fifths in head, much longer than 
snout, larger than in any other American Cyprinids ; fins mederate, the dorsal directly 
opposite ventrels, the tips of the ventrals oppcsite the last dorsal ray; scales large; 
fifteen in front of the dorsal; lateral line much decurved; clivaceous, scales above dark- 
edged ; sides and below bright silvery; no red; head 32; depth 43; D. 8; A.9; scales 
6-39-2 ; teeth 2, 4-4, 2. Length 5 inches. 
Habitat, Ohio Valley. 
Diagnosis.—The great size of the eye, larger than in any other min- 
now chiefly distinguishes this species. 
Hoabits.—This species is abundant in White River, Indiana, in which 
stream the original type was taken. It there frequents the river chan- 
nel, in company with dinemue, a species which it much resembles both 
in size and color. It doubtless occurs in Southern Ohio, but I have no 
specimens from that State. In fact, with the single exception of a 
specimen from Kentucky, preserved in the United States Museum, I 
have seen no specimens except from White River, and none others have 
been recorded. This species is very handsome, and is desirable for 
aquaria. 
73. MINNILUS SCABRICEPS (Cope) Jordan. 
Rough-headed Shiner. 
Photogenis scabriceps, Copx, Proc. Acad. Nat. Sci. Phil., 1867, 166. 
Cliola scabrieeps, JORDAN, Man. Vert., 2d Ed., 1868, 298. 
Bpisema scabriceps, JORDAN, Bull. Ills. Lab. Nat. Hist., 2, 1878, 60. 
Description.— Body rather stout, little compressed, the back slightly elevated ; head 
rather stout and broad, the muzzle bluntish, somewhat decurved ; mouth rather small, ter- 
minal, oblique ; the maxillary reaching the front of the orbit; lateral line decurved ; fins 
rather small, eye large, three in head ; color plain olivaceous, scales dark-edged above; 
sides white, with a lateral band formed of dusky specks, this band running through the 
