252 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



423. L. vittata Cope. 



Body rather stout. Head wide and flat above, slightly depressed be- 

 hind the eyes. Muzzle obtuse, not prominent. Mouth terminal, ob- 

 lique. Eye 3^ in head. Scales small, covering the whole body except 

 the .space behind the pectorals; 2G series above the lateral line and 56 

 in front of the dorsal. Preorbital bone trepezoidal. Second dorsal 

 spine as long as the first, and wider. Dorsal rays somewhat enlarged 

 and ossified. Pectoral rays scarcely enlarged. Color silvery ; a lead- 

 colored lateral baud and a black dorsal band. Head 3f ; depth 4. D. 

 II, 7 ; A. 9 ; teeth 2, 4-4, 2. L. 3i inches. Colorado Chiquito River, 

 Arizona. ( Cope.} 



(Cope, Pror. Ainer. Phil. Soc. Phila. 1674, 131, and Zoiil. Wheeler's Expl. W. 100th 

 Mer. v, 64->.) 



424. L,. jarrovii Cope. 



Body* more elongate. Mouth nearly horizontal, lower jaw somewhat 

 projecting. Eye larger than in L. vittata, 3 in head, the maxillary 

 reaching its anterior border. Spines slender. Scales very small and 

 difficult to detect, 51 series before the dorsal fin. Olivaceous ; a median 

 black vertebral band ; sides silvery ; bases of ventral fins red. Head 4; 

 depth 5. D. II, 7; A. 9; teeth 2, 4-4, 2. L. 3 inches. Colorado Chi- 

 quito Kiver, Arizona. (Cope.) 



(Cope, Proc. Acad. Nat. Sri. Phila. 1874, 133. and Zool. Wheeler's Expl. W. 100th 

 M.T. v , 643.) 



11O. HIEDA Girarcl. 

 (Girard, Proc. Acad. Nat. Sci. Phila. 1856, 191: type Mi-da fulgiAa Grd.) 



Body elongate. Mouth terminal, normal, no barbels. Teeth 1,4-4, 1, 

 hooked, without grinding surface. Body entirely scaleless. Fins as in 



Lci>i<lnH'<la. Size small. (Maht, a classical feminine name, of no con- 

 ceivable application to these singular fishes.) 



425. ill. fillKida <Jnl. 



Body slender, elongate, compressed. Head elongate, subconical, 

 the snout rounded. Mouth large, subterminal, slightly oblique, the 

 lower ja\v included, maxillary extending to below orbit. Second dorsal 

 spine highest ; dorsal behind ventrals. Coloration silvery. D. II, 7; A. 

 8; teeth 1, 4-4, 1. Rio Gila. (Girard.) 



(Girard, Proc. Arail. Nat. Sri. Phila. l,-;,6. 191; (iiinlli.T, vii, '^ 



