WHITE-CHEEKED SHINES. 8i9 



Habits. — This elegant fish is exceedingly common in Lake Erie, 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 (rubellws) 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 smaller eye, have been determined as M. 

 dilectus (Girard). They are probably not specifically difi'erent. 



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. 



Sqalius phoiogenis, Cope, Proc. Acad. Nat. Sci. Fhila., 1864, 280. 



Leuekcua phoiogmis , Gunthbr, Cat. Fishes, Brit. Mas., vii, 252. 



Minmlns photogenis, Jordan, Man. Vert., Ist Ed., 1876, — . 



Notropis phoiogenis, Jordan, Man. Vert., 2d Ed., 1878, 297. 



Photogenis leucops, Copfi, Trans. Am. Pnilos. Soc, 1866, 379, and elsewhere. 



Description. — Body slender, oompreseed ; head moderate ; month qaite oblique, lower 

 jaw scarcely projecting ; maxillary not reaching orbit ; back broad ; dorsal fin inserted 

 behind middle of body a little behind ventrals ; lateral line decur ved ; eye large, three and 

 a third in head; color olivaceous, with brown vertebral and dorsal lines; sides and 

 below bright silvery; cheeks silvery; head4i; depth 5^; 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. 



Habits, — This 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 



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