62 TELEOSTEI: EVENTOGNATHI. — XII. 



S\ in head, about equal to snout ; fins low; dorsal well behind ve 

 trals ; lateral line decurved. Greenish, pale above ; sides silver 

 a dark vertebral line. Head4f; depth 5|^. A. 11. Scales 5-38- 

 L. 5. Great Lakes to Tenn., abundant in lakes and rapids 

 rivers. Variable. (Alburnus rubellus Agassiz.) (^Minnilus dir, 

 mus Kaf., with shorter snout and smaller eye, is probably the sam 

 as also Alburnellus jaculus Cope; the latter, from Michigan ai 

 S., is slenderer, depth 6 in length.) (Like Aiherina.) 



130. N. arge (Cope). Eye very large, longer than snout, 3 : 

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

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

 sides bounded above by a blackish line ; a dark vertebral strea 

 Head 4\; depth 6. A. 11. Scales 5-39-3. L. 3^. Wabash Vs 

 ley (Evermann) and S. Mich. ; slenderer than N. atherinoidt 

 with much larger eye, but very likely a variety, {apyfis, shinii 

 white.) 



tt. Fins all small, the short V. not reaching vent, and barely to midd 

 of D. 



131. N. micropteryx (Cope). Very slender, compressed; hea 

 rather pointed; mouth large, oblique, the jaws subequal; eye mo( 

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

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

 depth 5\. A. 10. Scales 6-39-2. L. 2|. Ozark region, E. 1 

 E. N. C, in mountain streams. (fuKp6s, small; nripv^, fin.) 



57. ERICTMBA Cope, (ipt, an intensive particle; 

 Kvfji^r], cavity.) 



132. B. buocata (Cope). Body rather elongate, little con 

 pressed, head long, with broad, prominent snout; mouth smal 

 subinferior, the lower jaw shorter. Suborbitals broad, silver; 

 crossed by conspicuous translucent or silvery mucous channels, i 

 are also the interopercle and lower jaw; 15 scales before D. ; la 

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

 sexes alike. Head 4 ; depth 5. D. 8. A. 8. Scales 5-3S-I 

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

 remarkably distinguished by the structure of the bones of the heac 

 (Lat., big-jawed.) 



58. PHBNACOBIUS Cope. (0fVa^, deceptive ; jS.'os, life.) 

 u. Scales rather large, 40 to 52. 

 b. Breast scaly. 



133. P. teretulus (Cope). Body slender, subterete; snoi 

 thick, decurved; mouth small; eye large, high up, 3 J in hea( 

 Yellowish, darker above, a plumbeous lateral band. Head 4i 

 depth 4|. D. 8. A. 7. Scales 6-43-5. L. 3J. W. Va. (Lat 

 terete.) 



