60 TELEOSTEI : EVENTOGNATHI. — XII. 
decurved; eye 3 in head; 18 scales before D. Brown, a jet-black 
lateral band; @ orange below. Head 34; depth about 44. A. 8. 
Scales 6-35-83. LL. 2. Delaware R. (Lat., steel-colored.) 
mm. Teeth without grinding surface; D. fin nearly opposite V. 
o. Base of C. with a black spot; snout and base of D. red in 
spring. 
119. N. leuciodus (Cope). Slender, the snout rounded; mouth 
oblique, the lower jaw not projecting ; lateral line nearly straight ; 
12 scales before D. Silvery, a purplish lateral band. Head 4}. 
A. 8. Scales 5-39-3. L. 3. Holston R. (Aevxos, white.) 
oo. Base of C. without black spot in adult; # without red. 
p. Eye rather large, 3 to 33 in head. 
120. N. jejunus (Forbes). Slender; snout blunt; mouth rather 
large, oblique; 16 scales before D. Pale, a silvery lateral band 
over plumbeous. Head 4; depth42. A.7. Scales 5-37-3. L. 3. 
Penn. to Kans. (Lat., hungry.) 
121. N. scabriceps (Cope). Stout, head heavy, flattish above, 
with blunt snout; mouth little oblique; eye 3 in head; lateral line 
decurved; fins small. Olive, with a silvery plumbeous lateral band. 
Head 4; depth 44. <A. 8. Scales 6-38-3. Kanawha R. (Lat. 
scaber, rouch ; ceps, head.) 
pp. Eye very large, about 23 in head. 
122. N. ariommus (Cope). Body stout, compressed ; head 
large; snout rather blunt; mouth moderate, oblique, the jaws 
equal; eye much longer than snout, larger than in any other of 
our Cyprinide ; 15 scales before D.; lateral line much decurved. 
Olivaceous, sides silvery. Head 32; depth 44. A. 9. Scales 
6-39-2. L.5. Ind. to N. Ala. (dp, an intensive prefix; dupa, 
eye; 2. e. big-eyed.) 
yy. Base of anal comparatively elongate, its rays 10 to 12; D. inserted 
behind V. 
g. Scales comparatively small, closely imbricated along sides; scales be- 
fore D. small, 20 to 30; teeth with narrow grinding surface; nuptial 
colors brilliant. (Lythrurus Jordan.) 
r. A very distinct roundish black spot at base of first rays of D. 
123. N. ardens (Cope). Rerp-Fin. Body more or less elon- 
gate, strongly compressed ; head rather pointed; mouth large, 
rather oblique, the chin somewhat projecting; eye moderate; D. 
high; about 30 scales before it; lateral line much decurved. 9 
very pale, the dorsal spot usually distinct; ¢ steel-blue, belly and 
lower fins brick-red in spring. Head 44; depth 4}. D.8. A.11 
or 12. Scales 9-50-38. L.34. Minn. to Va. and Tenn., abundant. 
Very variable, but the varieties (lythrurus, atripes, cyanocephalus) 
are hardly worthy of separate names. (Minnilus diplemius Jordan 
& Gilbert; not diplemius Raf.) (Lat., burning.) 
