62 TELEOSTEI: EVENTOGNATHI. XII. 



3J in head, about equal to snout ; fins low; dorsal well behind ven- 

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

 a dark vertebral line. Head 4f ; depth 5^. A. 11. Scales 5-38-3. 

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

 rivers. Variable. (Alburnus rubellus Agassiz.) (Minnilw dine" 

 mus Raf., with shorter snout and smaller eye, is probably the same, 

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

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



130. N. arge (Cope). 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 6. A. 11. Scales 5-39-3. L. 3f Wabash Val- 

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

 with much larger eye, but very likely a variety, (dpyqy, shining 

 white.) 



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

 of D. 



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

 rather pointed ; mouth large, oblique, the jaws subequal ; 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 5. A. 10. Scales 6-39-2. L. 2|. Ozark region, E. to 

 E. N. C., in mountain streams. (p.LKpos, small; irrepv^, fin.) 



57. ERIC YMB A Cope, (ept, an intensive particle ; 

 Kvnfo, cavity.) 



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

 pressed, head long, 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 interopercle and lower jaw; 15 scales before D. ; lat- 

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

 sexes alike. Head 4; depth 5. D. 8. A. 8. Scales 5-33-3. 

 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. (<#*Va, deceptive ; t 'oy, life.) 



a. Scales rather large, 40 to 52. 

 b. Breast scaly. 



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

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

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

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

 terete.) 



