134 TELEOSTEL: ACANTHOPTERI. — XX. 
j. Scales about 5-50-9; D. IX-12; lateral line often incomplete behind ; 
fins moderate. 
9 
326. BE. nigrum Rafinesque. “JOHNNY.” Body slender, fusi- 
form; snout somewhat decurved; mouth small, sub-inferior; pale 
olive, back speckled with brown; sides with numerous W-shaped 
blotches ; males in spring dusky anteriorly, sometimes entirely black. 
Head 41; depth 5. D.IX-12. A. I, 8. Vert. 15 + 22 = 37. 
L. 24. Dakota to W. Penn. and Mo., very abundant in small 
brooks. (Boleosoma maculatum Agassiz.) 
yy. Scales about 5-40-6; dorsal rays IX-13; lateral line complete; 
fins very high. 
327. EB. effulgens (Girard). Snout much decurved ; brown, with 
9 spots on side; fins black; 2d D.and C. with white specks. Head 
41; depth 5}. L. 24. Penn. to N.C., probably a variety of B. 
nigrum. (? B. esopus Cope; D. VIL-14.) (Lat., shining.) 
hh. Soft dorsal with 10 or 11 rays. 
i. Cheeks naked; opercles scaly; scales 4-35-6. 
328. BE. vexillare Jordan. Body rather stout; nape naked; 
snout decurved; fins very high; ¢ dusky olive, faintly barred ; 
2d D. and C. with pale spots; other fins mostly black. Head 4; 
depth 5. D. VIII-10. A.I, 7. L. 24. Rappahannock R., Va., 
one specimen known. (L., bearing a standard.) 
it. Cheeks and opercles wholly naked; scales in lateral line 45. 
329. E. susane (Jordan & Swain). Very slender; head short 
and small, the snout decurved ; head, nape, breast, and middle of 
belly naked; fins low. Color of E. nigrum. Head 43; depth 64. 
D. VITI-10. A.I, 8. L. 2. Cumberland R., abundant in S. Ky. 
(To Mrs. Susan Bowen Jordan.) 
gg. Lateral line ceasing near middle of body. (Vaillantia! Jordan.) 
330. E. chlorosoma (Hay). Body slender, with long tail; back 
somewhat elevated ; mouth small, inferior, the snout strongly de- 
curved ; cheeks, opercles and breast scaly, nape naked; fins small. 
Olivaceous, the back spotted ; about ten dark spots on sides; a dark 
opercular spot; head spotted above; D. and C. barred. Head 44; 
depth 5}. D. X-10. A. 1,8. Scales 5-56-10. Vert. 38. L. 24. 
Ill. to Ala. and Ark., common 8. W. (Boleosoma camurum Forbes). 
(xA@pos, green; oapa, body.) 
Jf. Anal spines two, well developed, the first usually the longer. 
m. Gill membranes more or less broadly united; belly with ordinary 
scales. 
n. Maxillary normal, free from the preorbital. (Ulocentra 2 Jordan.) 
1 To Léon Vaillant, author of a monograph of the Darters. 
2 odAos, complete ; Kévtpov, spine. 
