CTPKINID^. — XXVI. 59 



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

 with the belly and lower fins bright rosy. Head 4^ ; 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).) (/xeyaXof, big; 

 ay\r, eye.) 



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

 body not elevated ; small fishes often brilliant in the nuptial 

 season. {Hydrophlox '^ Jordan & Brayton.) 

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

 hind V. 

 n. Lower jaw distinctly projecting beyond upper. 



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

 pointed ; mouth large, very obli(jue, 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 4l. A. 9. Scales 

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

 yiveiov, cheek.) 



nn. Lower jaw little if at all projecting. 



115. N. zouatus (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. 9 ^^^ young olivaceous, with plumbeous lateral 

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

 sides and lower parts flame-red. Head 41; depth 4 1. 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, 3i 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. rubricroceus (Cope). Red Fall-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; 9 pale. Head 4; depth 4^. A. 9. Scales 7-38-8. 

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

 (Lat., saffron-red.) 



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

 snout pointed; mouth oblique; lower jaw projecting; latex'al 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 fishes, are found iu the 

 southern streams. 



