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 43; depth 54. A.11. Scales 5-38-38. 
L. 5. Great Lakes to Tenn., abundant in lakes and rapids in 
rivers. Variable. (Alburnus rubellus Agassiz.) (dfinnilus 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 44; depth 6. A.11. Scales 5-39-3. L. 34. Wabash Val- 
ley (Evermann) and S. Mich.; slenderer than N. atherinoides, 
with much larger eye, but very likely a variety. (dpyjs, shining 
white.) 
tt. 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, 34 in head; lateral line decurved; D. inserted well behind 
V. Pale olive; sides bright silvery, base of C. dusky. Head 44; 
depth 54. A. 10. Scales 6~39-2. L. 23. Ozark region, E. to 
E. N. C., in mountain streams. (juxpdés, small; mrépvé, fin.) 
57. ERICYMBA Cope. (¢épr, an intensive particle; 
KupBn, cavity.) 
132. EB. buccata (Cope). Body rather elongate, little com- 
presséd, 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. (dévak, deceptive; Bios, 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, 34 in head. 
Yellowish, darker above, a plumbeous lateral band. Head 43. 
depth 42. D.8. A. 7. Scales 643-5. L. 3}. W.Va. (Lat., 
terete.) 
