CYPRINIDA. — XXVI. 59 
fins pale; a dark shade behind shoulder ; spring males tuberculate, 
with the belly and lower fins bright rosy. Head 41; 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).) (peyddos, big; 
ay, eye.) 
kk. Scales on sides less closely imbricated,! scarcely deeper than long; 
body not elevated; small fishes often brilliant in the nuptial 
season. (Hydrophlox 2 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 oblique, the maxillary past front of 
eye; eye very large, 34 in head ; 20 scales before D. Olivaceous, 
silvery below ; males with a scarlet vertical brand on preopercle; 
ared axillary spot; snout and belly rosy; a dark scapular band; 
outer half of D.and C. dusky. Head 4; depth 44. A.9. Seales 
7-42-3. L.5. Mountain streams, Ky. to Ga. (koxkos, cherry-red; 
yevetov, cheek.) 
nn. Lower jaw little if at all projecting. L 
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. 9 and young olivaceous, with plumbeous lateral 
band and no caudal spot. ¢ in spring with black lateral band, 
sides and lower parts flame-red. Head 41; depth4?. 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. 434. Holston R. (Lat., 
lizard-like.) 
117, N. rubricroceus (Cope). Rep Faut-risn. Head rather 
pointed; mouth oblique, rather large, the jaws equal; eye large, 34 
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. 24. Mountain torrents, on both sides of Great Smoky range. 
(Lat., saffron-red.) 
118. N. chalybzeus (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. 
2 Numerous species of this type, gaily colored little fishes, are found in the 
southern streams. 
