246 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 



410. L. hicolor ((Jnl.) Jor. 



Body moderately stout. Head rather heavy, the muzzle very short 

 and conical. Mouth moderate, very oblique, the jaws equal, the max- 

 illan reaching line of eye. Scales rather large. Lateral line deeurved. 

 Kye rather large, 4.J in head. Color transparent, olivaceous; a distinct 

 plumbeous lateral baud. Fins dusky-shaded. Scales with some brown 

 dots, but not profusely dusted with black specks as in the two preceding 

 species. Head 3; depth 3$. D. 8; A. 7; scales 8-50-5 (11-48-5, Cope); 

 teeth 4.">. L. 5 inches. Steams of Oregon, Nevada, etc. 



(Algtinsea blcolor (I Irani, Proc. Aead. Nat. Sci. Pirila. 1856, 18:5: Leucwcu* bicolor 

 (iiiuthor, vii, 245: Myloleacus paroi'anus Cope, Zoul. \Vheeler's Expl. W. 100th Mer. v, 

 rUl: .Ionian & H<jnsha\v, 1. c. 1U3.) 



411. L.. aiiticus (Cope) Jor. &. Gilb. 



Nearest to the formosus of Girard, but differs in the much more pos- 

 terior position 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 the/orwo..s- 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, flat, descending; dorsal outline arched. Pur- 

 plish slate above, yellow below; sides of head and edges of scales punc- 

 tulate. Head 3. D. 8; A.S; scales 10-50-0; teeth not described. L. 

 5 inches. Texas. (Cope.) 



.lli/antiea antica Cope, Proc. Acad. Nat. .Sci. Phila. 1SG4, 282.) 

 ll'. I,. houcardi (Giiuther) Jor. & Gill). 



I.ody moderately elongate. Head thick, obtuse. Mouth broad, its 

 elet't not extending to the eye. Siiout convex, the lower jaw included. 

 lOye moderate, KV in head. Caudal (in moderately forked. Origin of 

 dorsal lin close behind that of the ventrals. Brownish; a bluish lateral 

 band, forming a faint caudal spot. Head 4; depth 4. I). 8; A. 11; scales 

 0-3!) i; teeth .">-!. L. .'^inches. Cnernavaea, Mexico. (Uiinthcr.) 



1 1 nrim-HH Ixniiitrili (iiiiifher, vii, 4H">.) 



(Hay, I'r.-n-. I . S. Na'.. Mils. 1 n. .",11?: tspr Op80pOSOdU8 emillCB Hay.) 



IMH-III of IIi/ltotjiHilliitx. Mouth very small, almost veilical, its position ' 

 entirely anterior, with scarcely any lateral cleft. Teeth 5-5, with grind- 

 ing surface and serrated edges. Abdomen not compressed. Dorsal 



