856 FISHRES—CYPRINID A. 
Description.—Body slender, little compressed, the back elevated, the caudal peduncle 
stout; head stout, the muzzle elongate, obtusely decurved, heavy ; mouh small, in- 
ferior, horizontal, the maxillary not reaching to the eye; lips weakly plicate; isthmus 
wide; lateral line nearly straight ; eye large, high up, three and a half in head; pale 
yellowish, the scales above dark-edged; snout blackish ; a plumbeous lateral band; fins 
plain ; head 4%; depth 44; D.8; A. 7; scales 6-43-5; teeth 4-4. Length 33 inches. 
Habitat, West Virginia to the Rio Grande. 
Diagnosts.—F rom other small minnows, this species may be sagen by 
the thickened lips, in connection with the short intestines and the num- 
ber (44) of the teeth. ; 
Habits.—This species has not yet been recorded from Ohio. P. teretulus 
occurs in the streams of West Virginia, and P. scopiferus which I take to 
be the same species or a variety of it is found in Illinois. Wemay there- 
f ore look for it in the streams of Southern Ohio. Little distinctive is 
known of the habits of this species. Professor Cope found it in the 
Kanawa, abundant in the river channel and in the mouths of tributaries. 
Genus 38. RHINICHTHYS. Agass‘z. 
Argyreus, HECKEL, Russegger’s Reisen, 1843, i, 1040 (preoccupied in Entomology). 
Rhinichthys, AGASS1Z, Lake Superior, 1850, 350. 
Type, Cyprinus atronasus, Mitch. 
Etymology, rhin, snout ; ichthus, fish. 
Body rather elongate, not much compressed ; mouth small, subinferior, normal ; the 
upper jaw not protractile ; the upper lip continuous with the skin of the forehead; a bar- 
bel terminal, on the maxillary ; teeth usually 2, 4-4, 2, hooked, without grinding sur- 
face; intestinal canal short ; scales very small ; lateral Jine continuous; dorsal fin inserted 
behind the ventrals; anal basis short ; coloration dark, rosy in spring. 
Species of rather small size, abounding in ail clear brooks in the United States, east 
of the Rocky Mountaits. 
ANALYSIS OF SPECIES OF RHINICHTHYS. 
*Body elongate, the depth about 5 in length; barbel rather long ; snout much pro- 
 jecting. © F : 5 : CATARACT2s, 78. 
eee compact, the depth 4 te 44 in ee ‘aadteh minute; snout little projecting. 
ATRONASUS. 79. - 
78. RHINICHTHYS CATARACT (Valenciennes) Jordan. 
Long-nosed Dace; Niagara Gudgeon. 
Gobio cataracte, CUV. and VaAL., Hist. Nat des Poissons, xvii, 1842, 315, pl. 483. 
Ceratichthys cataracte, Copr, Trans. Am. Philos. Soc. Phila., 1866, 365.—GUNTHER, Cat, 
Fishes Brit. Mus., vii, 176. 
Rhinichthys cateracte, JORDAN, Man. Vert., 2d ed., 1878, 307, and elsewhere. 
Leuciscus nasutus, AYRES, Bost. Journ. Nat. Hist., iv, 1843, 2, 99, aud of authors. 
