WHITE-CHEEKED SHINER. 849 
Habits.—This elegant fish is exceedingly common in tee Krie, and 
throughout the State it is one of the most abundant of the Minnows. It 
frequents the large bodies of water, and is seldom seen in small streams. 
It delights in clear lakes and in the deep water at the foot of a milldam 
or waterfall. Off the wharves in the lake, they are often caught by boys 
with dip-nets, who sell them to fishermen as bait. 
I find considerable variation in this species both in form and color. 
Lake specimens (rubellus) are usually brilliantly silvery. Some river 
specimens (dinemus, jaculus) are much slimmer than others, the depth 
sometimes forming less than one sixth of the length. These slender 
specimens have been described as a distinct species, and they may really 
be, but at present, I am unable to define them as such. Again, 
deep-bodied specimens with rather smallereye, have been determinedas M. 
dilectus (Girard). They are probably not specifically different. 
Name.—The specific name, dinemus (two-threaded), refers to the pre- 
sence of two lateral lines, i.e., the true lateral line, and a color-streak 
above it. It is an objectionable and perhaps misleading name, but as it 
has priority, I-do not feel authorized to reject it. The still earlier name 
atherinoides, perhaps belongs to this species, but it may have been based on 
the young of Notemigonus. 
71, MINNILUS PHOTOGENIS (Cope) Jordan. 
White-cheeked Shiner. 
Sgalius photogents, COPE, Proc, Acad. Nat. Sci. Phila., 1864, 280. 
- Leuciscus photogenis, GUNTHER, Cat. Fishes, Brit. Mus., vii, 252. 
Minntlus photogenis, JORDAN, Man. Vert., lst Ed., 1876, —. 
Notrepis pketogents, JORDAN, Man. Vert., 2d Ed., 18738, 297. 
Pkotogenis leucops, CoPprk, Trans. Am. Philos. Soc., 1866, 379, and elsewhere. 
_ Descriptiox.—Body slender, compressed; head moderate; mouth quite oblique, lower 
jaw scarcely projecting; maxillary not reaching orbit; back broad; dorsal fin inserted 
behind middle of body a little behind ventrals; lateral line decurved; eye large, three and 
a third in head; color olivaceous, with brown vertebral and dorsal lines; sides and 
below bright silvery; cheeks silvery; head 44; depth 54; D 8; A.10; scales 6-40-3. 
Length 3 inches. 
Habitat, Ohio Valley and southward. 
Diagnosis.—This species much resembles the young of the preceding. 
Its eye is not so large, and the dorsal fin is | not as far back. The anal 
fin is also smaller. 
Habtis.—T his species is rarely seen in the State of Ohio. It occurs in 
some tributaries of the Ohio, in West Virginia, and probably will be found 
o4 
