848 FISHES — CYPRINIDiE. 



lathei pointed ; month 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 witb red ; head 3 4-5 ; depth 4J ; 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. 



Diagnod<,—ThiB is a much smaller species than M. dinemiis. It has 

 also a notably larger head and smaller eye. 



HahUg. — 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. MiNJSiLus DiNEMus Rafinesque. 



Emerald Minnow^; Rosy minnow; Lake Silverside. 



f Notropls 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., Ist Ed., 1876. 

 Notropie dinenius, Jordan, Man. Vert., 2d Ed , 1878, 296, and elsewhere. 

 Alburnus rubellns, Agassiz, Lake Superior, 1850, 364. 

 Leadacus ruhellus, Quniher, Cat. Pishes Brit. Mns., vii, 1868, 254. 

 Minnilus rubellas, Jordan, Man. Vert., Ist Ed., 1876, — . 

 Notropis ruiellus, Jordan, Man. Vert., 2d Ed., 1878, 296. 

 Alburnellus dilectua, Girard, Froc. Acad. Nat. Sci. Fhila., 1856, 193. 

 Albumellut jacutus, Cope, Trans. Am. Philos. Soc, 1866, 387. 

 Alburnellus arge, Cope, Trans. Am. Philos. Soc, 1866, 387. 

 Leuciswa copii, Gunther, Cat. Fishes, Brit. Mns., 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 ventr^ls, the tips of the ventrals extending 

 to about the middle of the dorsal ; lateral line deourved ; color tranalucent 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 J : depth 5^; D. 8 ; A. 11 ; 

 scales 5-38-3 ; 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. 



