62 TELEOSTEI: EVENTOGNATHI. — XII. 



3} 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 4$; depths 1 -. A. 11. Scales 5-38-3. 

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

 rivers. Variable. (Alburnus rubellus Agassiz.) (Minnilu.i dine- 

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

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

 S., is slenderer, depth C in length.) (Like Atherinn.') 



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 41 ; depth 6. A. 11. Scales 5-39-3. L. 31. Wabash Val- 

 ley (Evermann) and S. Mich. ; slenderer than 2V. atherinoides, 

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

 white.) 



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

 of 1). 



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 A\ ; 

 depth b\. A. 10. Scales 6-39-2. L. 2f. Ozark region, E. to 

 E. N. C, in mountain streams, (fuxpos, small; irripv£, fin.) 



57. ERICYMBA Cope, (e'pt, an intensive particle; 

 Kvpi-q, 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. PHENACOBITJS Cope. (<ptt>a£, deceptive ; &los, 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 J. D. 8. A. 7. Scales 6-43-5. L. 3£. W. Va. (Lat., 

 terete.) 



