848 FISHES——CYPRINID 2. 
rather pointed ; mouth rather large, very oblique; upper lip above the line of the mid- 
dle of the pupil, the maxillary reaching to opposite the eye; eye moderate, anterior, 4 in 
head; olivaceous above, the scales with darker edges; sides silvery; a dark vertebral 
line; males with the snout tuberculated in the spring, the forehead, opercular region, 
and base of the dorsals being flushed with red; head 3 4-5; depth 43; D. 8; A. 10; scales 
6-39-3 ; teeth 2, 4-4, 2, little hooked, one of them sometimes showing a sort of grinding 
face. Length 2% inches. 
Habitat, Ohio Valley. 
Diagnosi:—This is a much smaller species than M. dinemus. It has 
also a notably larger head and smaller eye. | 
Habits.—This elegant little fish is very abundant in the southern part 
of Ohio. It frequents clear waters and rapids of the larger streams. In 
the breeding season it is very handsome. 
70. MINNILUS DINEMUS Rafinesque. 
Emerald Minnow; Rosy Minnow ; Lake Silverside. 
? Notropis atherinoides, RAFINESQUE, Am. Month. Mag, ii, 1818, 204 (erroneous and un- 
certain ; may be Notemigonus).—JORDAN, Bull, Ills Lab. Nat. Hist., ii, 1878, 60. 
Minnilus dinemus, RAFINESQUE, Ich. Oh., 1820, 45.—JoRDAN, Man Vert., lst Ed., 1876. 
Notropis dinemus, JORDAN, Man. Vert., 2d Ed, 1878, 296, and elsewhere. 
Alburnus rubellus, AGAssiz, Lake Superior, 1850, 364. 
Leuciscus rubellus, GUNTHER, Cat. Fishes Brit. Mus., vii, 1868, 254. 
Minnilus rubellus, JORDAN, Man. Vert., Ist Ed., 1876, —. 
Notropis rubellus, JORDAN, Man. Vert., 2d Ed., 1878, 296. 
Alburnellus dilectus, GIRARD, Proc. Acad. Nat. Sci. Phila., 1856, 193. 
Alburnellus jacutus, COPE, Trans. Am Philos. Soc., 1866, 387. 
Alburnellus arge, COPE, Trans. Am. Philos. Soc., 1866, 387. 
Leucisus copii, GUNTHER, Cat. Fishes, Brit. Mus., vii, 1868, 205. 
Description —Body long and slender, compressed, the back not elevated; head slen- 
der, conic, proportionately shorter than in the other species; mouth moderate, very 
Oblique ; upper lip on a level with the lower part of the pupil; maxillary not reaching 
to the front of the eye; eye large, rather longer than the snout, three and one-fourth in 
head ; fins low, the dorsals well behind the ventrals, the tips of the ventrals extending 
to about the middle of the dorsal; lateralline decurved; color translucent green above, 
sides bright silvery ; scales above finely punctate, but not enough to render them dark 
edged, nor to form blotches along the sides ; a faint dark vertebral line ; males in spring 
with the snout and the base of the dorsal fin rosy; head 4%: depth 54; D.8; A. 11; 
seales 5-38-35 teeth 2, 4-4, 2. Length 5 inches. 
Habitat, Ohio Valley and Great Lake Region, frequenting the river channels and the 
lakes. 
Diagnosis.—This species is perhaps the slenderest of our minnows. It 
may be known by its form, its silvery coloration and the size of its 
anal fin. 
