CYPRINID^E. XXVI. 61 



rr. No distinct black spot at base of D. in front. 

 s. Body rather deep and compressed, the depth 21 to 4j in length. 



124. N. umbratilis (Girard). $ with the body very deep; 9 

 comparatively elongate; snout short and blunt; mouth terminal, 

 wide, oblique ; lower jaw included ; eye about 4 in head ; 30 scales 

 before D. Olivaceous, thickly dusted with black specks ; fins in 

 g all jet-black ; paler or dusky in 9 ; body and fins flushed with red 

 in spring. Head 4 ; depth (male) 2f. A. 10 or 11. Lat. 1. 40. L. 3. 

 111. to Kansas and S., locally common. Very variable. (N. macro- 

 lepidotus Forbes (111.) seems to be the same, but with 19 scales 

 before D.) (Lat., shady.) 



ss. Body elongate, the depth even in males about 1 the length. 



125. N. lirus Jordan. Very slender; eye 3 in head. Color 

 pale, silvery ; sides with a band of metallic blue ; series of black 

 dots on bases of D. and A. ; males with red fins. Head 4^ ; depth 

 5. A. 10. Scales 8-45-4. L. 2J. Tenn. and Ala. (Xetpds, pale.) 



qq. Scales comparatively large, not closely imbricated ; scales before D. 

 large, in about 15 rows; teeth without grinding surface; D. inserted 

 behind V.; mouth oblique, the lower jaw scarcely shorter; elon- 

 gate, silvery species, the males usually with snout and base of dorsal 

 rosy. (Notropis. 1 ) 

 t. Fins moderate, the ventrals extending beyond middle of dorsal. 



126. N. photogenis (Cope). Slender, compressed; mouth ob- 

 lique, the jaws subequal ; maxillary not quite to orbit ; lateral line 

 decurved ; eye large, 3J in head, as long as snout. Greenish, sides 

 silvery. Head 4J ; depth 5. A. 10. Scales 6-40-3. L. 3. Penn. 

 to W. Va. and S. (<a>y, light; yews, cheek.) 



127. N. telescopus (Cope). Similar to preceding, the D. farther 

 forward, not much behind V., midway between snout and C. ; eye 

 very large, 2| in head ; mouth oblique, the jaws subequal ; scales 

 above dark-edged. Head 4; depth 5. A. 10. Scales 5-38-3. 

 L. 3. Tenn. R. (rrjAeo-KOTros, far-seeing.) 



128. N. dilectus (Girard). Body moderately elongate, the back 

 scarcely elevated, the tail slender ; head longer than in related spe- 

 cies, rather pointed ; mouth rather large, oblique, the jaws subequal ; 

 eye moderate, 4 in head. Olivaceous, sides silvery ; vertebral line 

 faint. Head 4; depth 4|. A. 10. L. 2f. Ohio to Neb. and 

 Ark. Common. Much smaller than N". atherinoides, with longer 

 head. (Alburnellus rubrifrons and percobromus Cope.) (Lat., 

 delightful.) 



129. N. atherinoides (Rafinesque). Body comparatively elon- 

 gate, compressed, the back not elevated ; head short, blunt ; mouth 

 moderate, very oblique, maxillary reaching front of eye ; eye large, 



1 The species of this group are extremely closely related, and in some cases 

 scarcely distinguishable. 



