246 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 
410. 1.. bicolor (Grd.) Jor. 
Body moderately stout. Head rather heavy, the muzzle very short 
and conical. Mouth moderate, very oblique, the jaws equal, the max- 
illary reaching line of eye. Scales rather large. Lateral line decurved. 
Eye rather large, in head. Color transparent, olivaceous; a distinct 
l>lumbeous lateral band. Fins dusky-shaded. Scales with some brown 
dots, but not profusely dusted with black specks as in the two preceding 
species. Head depths^. I). 8; A. 7; scales 8-50-5 (11-48-5, Cope); 
teeth 4-5. L. 5 inches. Steams of Oregon, Xevada, etc. 
{Algansea hicolur Girard, Proc. Acad. Nat. Sci. PJiila. 1856, 183: Lemiscm bicolor 
Giiutlier, vii, 245: Miilolencus parovanus Coj>e, Zoul. Wheeler’s Expl. W. 100th Mer. v, 
660; Jordan & Henshaw, 1. e. 103.) 
411, Li. ailticus (Cope) Jor. & Gilb. 
“ Xearest to the formosus of Girard, but differs in the much more pos- 
terior j)ositiou of the tins. In this the anterior base of the dorsal is 
equidistant between end of muzzle and base of tail ; in anticus much 
behind the median point. The ventrals are much nearer the caudal 
than the chin; in tbe/or»/os?h9 the reverse is the case.” Body moderate, 
shortened behind. Caudal peduncle short, thick. Caudal fin short, 
little forked. Mouth oblique, muzzle not reaching line of orbit. Eye 
5 in head. Profile long, fiat, descending ; dorsal outline arched. Pur- 
plish slate above, yellow below; sides of head and edges of scales punc- 
tulate. Head 3§. D. 8; A. 8; scales 10-50-0; teeth not described. L. 
5 inches. Texas. {Cope.) 
(Ahjansea antica Cope, Proc. Acad. Nat. Sci. Pliila. 1864,282.) 
41*2. 4i. boticni'di (Giiiitber) Jor. & Gilb. 
Body moderately elongate. Head thick, obtuse. Mouth broad, its 
cleft not extending to the eye. Snout convex, the lower jaw included. 
Eye moderate, 44 in head. Caudal fin moderately forked. Origin of 
dorsal fin elose behind that of the ventrals . Brownish; a bluish lateral 
band, forming a faint caudal spot. Head 4; depth 4. H. 8; A. 1); scales 
0-^39-4 ; teeth 5-4. L. 3^ inches. Cuernavaca, iMexico. {Gunther.) 
{Lcuciscus boucardi Giinther, vii, 485.) 
105.— OPSOPGEODUS Hay. 
(Hay, Proc. U. S. Nat. Mas. 1880, 507 : type Opsoiywodtis emiliw Hay.) 
Form of Ilijbognathus. Mouth very small, almost vertical, its position 
entirely anterior, with scarcely anj^ lateral cleft. Teeth 5-5, with grind- 
ing surface and serrated edges. Abdomen not compressed. Dorsal 
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