CTPEINIDiE. — XXVI. 59 



fins pale ; a dark shade behind shoulder ; spring males tuberculate, 

 with the belly and lower fins bright rosy. Head 4J ; depth 3 to 5. 

 A. 9. Scales 6-41-3. L. 8. In all brooks from Maine to Rocky 

 Mts. except those of the Carolinas and Texas ; excessively abun- 

 dant and variable. {Luxilus cornutus (Mitchill).) (^e^aXos, big; 

 &^, eye.) 



hlc. Scales on sides less closely imbricated,^ scarcely deeper than long; 

 body not elevated ; small fishes often brilliant in the nuptial 

 season. {Hydrophlox 2 Jordan & Braj'ton.) 

 m. Teeth with narrow grinding surface; D. inserted more or less be- 

 hiad V. 

 ». Lower jaw distinctly projecting beyond upper. 



114. N. coooogenis (Cope). Body elongate, compressed ; head 

 pointed; mouth large, very oblique, the maxillary past front of 

 eye ; eye very large, 3^ in head ; 20 scales before D. Olivaceous, 

 silvery below ; males with a scarlet vertical brand on preopercle ; 

 a red axillary spot ; snout and belly rosy ; a dark scapular band ; 

 outer half of D. and C. dusky. Head 4 ; depth 4^. A. 9. Scales 

 7-42-3. L. 5. Mountain streams, Ky. to Ga. (kokkoi, cherry-red; 

 yivfiov, cheek.) 



nn. Lower jaw little if at all projecting. 



115. N. zonatus (Agassiz). Body rather elongate ; head long, 

 not acute; jaws equal; maxillary 3 in head, not to eye; snout 

 shortish; eye very large, 3 in head; lateral line decurved; 16 

 scales before D. 5 and young olivaceous, with plumbeous lateral 

 band and no caudal spot. $ in spring with black lateral band, 

 sides and lower parts flame-red. Head 4 J; depth 4J. A. 9. Scales 

 6-39-4. L. 5. Ozark region. 



116. N. lacertosus (Cope). Body stout, with large head; 

 mouth wide, the lower jaw projecting; eye large, 3^ in head, equal 

 to snout or interorbital ; maxillary not to eye. Silvery. D. dusky ; 

 no red. Head 4 ; scales 5 above lat. 1. L. 4^. Holston R. (Lat., 

 lizard-like.) 



117. N. rubricrooeua (Cope). Red Pall-fish. Head rather 

 pointed; mouth oblique, rather large, the jaws equal; eye large, 3^ 

 in head; lateral line decurved; 19 scales before D. ^ blue, with 

 black lateral band, the whole body more or less suffused with 

 blood-red; ? pale. Head 4; depth 4^. A. 9. Scales 7-38-8. 

 L. 2i. Mountain torrents, on both sides of Great Smoky range. 

 (Lat., saffron-red.) 



118. N. chalybcBus (Cope). Body slender, the back elevated; 

 snout pointed; mouth oblique; lower jaw projecting; lateral line 



* This character is not of much value, as in some of the species the scales become 

 quite closely imbricated in adult specimens. 



> Numerous species of this type, gaily colored little flshcs, are found in the 

 southern streams. 



