62 TELEOSTEI: EVENTOGNATIII. — XII. 



.TJ ill lic;i(l, altniit otjual to snout ; fins low; dorsal well beliind vcn- 

 trals ; lateral line deeiirved. Greenish, {)ale above ; sideb silvery ; 

 a dark vertebral line. Ileadlj; depth o^. A. 11. Scales 5-;J8-3. 

 L. 5. (Ireat I.akes to Tenn., abundant in lakes and rapids in 

 rivers. Variable. (^Alhumus ruhellus Agassiz.) (^Miiniilu.i dinc- 

 ttius Raf., with shorter snout and smaller eye, is prol)aI)ly the same, 

 as also Alliurtnllus jaculus Cope; the latter, from Michigan and 

 S., is slenderer, depth G in length.) (Like At/icrlnn.) 



1;J0. N. arge (Coj)e). Eye very large, longer than snout, .3 in 

 head ; lateral line nearly straight , head large, the snout not very 

 blunt; mouth large, the chin projecting. Pale, the silver band on 

 sides bounded above by a blackish line ; a dark vertebral streak. 

 Head 4|; depth G. A. 11. Scales 5-39-3. L. 3^. Wabash Val- 

 ley (Evennann) and S. Mich.; slenderer than N. at/ierhioitles, 

 with much larger eye, but very likely a variety, (dp-yijf, shining 

 ■white.) 



it. Fins all small, the short V. not reaching vent, and barciv to middle 

 of D. 



1.31. N. micropteryx (Cope). Very slender, compressed; head 

 rather pointed; mouth large, obli(iue, the jaws subecjual; eye mod- 

 erate, .3^ in head; lateral line decurved; D. inserted well behind 

 V. Pale olive; sides bright silvery, base of C. dusky. Head 4^; 

 depth ."i^. A. 10. Scales 6-39-2. L. 2f. Ozark region, E, to 

 E. N. C, in mountain streams. (fiiKpoi, small; 7rr«pu|, fin.) 



57. ERICYMBA Cope, {fpi, an intensive particle; 

 Kvfi^tj, cavity.) 



132. E. buccata (Cope). Body rather elongate, little com- 

 pressed, hea<l lung, with broad, prominent snout ; mouth small, 

 subinferior, the lower jaw shorter. Suborbitals broad, silvery, 

 crossed by conspicuous translucent or silvery mucous channels, as 

 are also the interoperclc and lower jaw; l."* scales before D ; lat- 

 eral line straightish; eye large, 4 in head. Olivaceous, sides silvery; 

 se.xes alike. Head 4 ; depth 5. D. 8. A. 8. Scales .'i-SS-S. 

 L. 4. Mich, to Kans. and W. Fla., abundant in small, clear brooks, 

 remarkably distinguished by the structure of the bones of the head. 

 (Lat., big-jawed.) 



58. PHENACOBIUS Cope. (^tVa^, deceptive ; /3/of, life.) 



a. Scales rather large, 40 to 52. 

 b. Hreast scaly. 



133. P. teretulus (Cope). Body slender, subtcretc ; snout 

 thick, decurved; mouth small; eye large, high up, 3^ in head. 

 Yellowish, darker above, a phunbeotis lateral band. Head 4 J. 

 depth 43. D. 8. A. 7. Scales i;-13-3. L. 3j. W. Va. (Lat., 

 terete.) 



