68 TELEOSTEI : EVENTOGNATHI. — XII. 



ilccurved ; 13 to 15 scales before I). ^ steel-blue, profusely 

 tuberculate, belly and fins blood-red ; a violet and a erinison cres- 

 cent behind shoulder; 9 pluin ; fins unspotted. Head .'ilj ; depth 

 2^ (adult) to 4 (younf^). A. 8. Scales G-35-2. Teeth soiuel lines 

 1, 4-4, 1. L. 3. S. 111. to Kio (Irande, very abundant S. W. ; a 

 very brilliant and very variable little lisb. (Lat. lutra, otter; first 

 known from Otter Creek, Ark.) 



jj. Pharyngeal teeth 1, 4-4, 1, their edges often crenate ; ours with narrow 

 prindiiif^ surface; adult males witli a large black blotch on upper pos- 

 terior rays of D. (Cijjmntlla'^ Girard.) 

 X. Anal sliort, its rays 8 or 9 ; D. inserted just behind V. ; cf in spring 

 witli tlic (ins charged with satin-white pigment. 



110. N. Whipple! (dirard). Silver-Fin. Body subelliptical, 

 the adult much coiuj)ressed ; head short, not very blunt; mouth 

 rather small, obli(jue, the lower jaw shorter; eye small, 4, \ in head; 

 males with liii^h fins, lihiish silvery ; scales dusky ed;jjed ; a dark 

 vertebral line ; dorsal blotch lar^e in adult, wanting in young ; 

 no creamy band across base of C. Head 4J; depth 4. A. 8. 

 Scales 5-38-3. Teeth serrate. L. 4. W. X. Y, to Va. and 

 Minn., S. to Ark., abundant. (To Capt. A. W. Whipple, U. S. A.) 



111. N. galacturus (Cope). Similar to the preceding, but 

 larger, more elongate and less compressed, the scales less closely- 

 imbricated, lateral line less decurved ; teeth usually not serrate ; 

 the lower jaw included. Color like preceding but more silvery ; C. 

 dusky, its basal third bright creamy yellow. Head 4^; depth 4 J. 

 A. 8. Scales 6-41-3. L. 6. Ozark region, E. to E. Tenn. and 

 Savannah K. in mountain streams. (yd\a, milk; ovpd, tail.) 



112. N. camurus Jordan & Meek. More robust than the pre- 

 ceding, the back elevated ; anterior profile steep, the snout bluntly 

 decurved; mouth small, obli(iue ; teeth crenate. Color much as in 

 N. tcfiipplei. Head 4^; depth 3^. A. i). Scales 6-38-4. L. 4. 

 Ark. K., N. E. to S. Missouri. (Lat., blunt-faced.) 



aa. Teeth 2, 4-4, 2 ; lateral line complete, 

 y. IJase of anal short, its rays 7 to 9. 

 k. Scales on sides much deeper than long, especially in the adult, and so 

 closely imbricated that the exposed edges are very narrow; body 

 deep ; L>. tin inserted above V. (Lujrilus llaf.) 



113. N. megalops (Ramies(pie). Commo.n Shiner; Rkd-Fin. 

 Dace. Body short, compressed in the adult, in the young elon- 

 gate; head heavy, interorbital area rounded; snout bluntish; 

 mouth moderate, little oblicjue; lower jaw included; eye mo<lerate, 

 4 to 5 in head; lateral line decurved; about 20 (15 to 25) scales 

 before D. Adult steel-blue, with gilt lines in life, sides silvery ; 



' NumrrniiK npofimt of this group, some of them Tery Jelicatoljr colored, abouod la 

 tiM riren of the South. 



