124 TELEOSTEI: ACANTHOPTERI. — XX. 
j. Scales about 5-50-9; D. IX-12; lateral line often incomplete behind; 
fins moderate. 
™™ $96. 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 44; depth 5. D. TX-12 A.J, 8 Vert. 15 + 22 = 87, 
L. 2}. 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. B. effulgens (Girard). Snout much decurved ; brown, with 
9 spots on side; fins black; 2d D. and C. with white specks. Head 
41; depth 54. L. 2}. Penn. to N.C., probably a variety of B. 
nigrum. (? B. esopus Cope; D. VII-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.1,7. L. 2}. Rappahannock R., Va. 
one specimen known. (L., bearing a standard.) 
ti. Cheeks and opercles wholly naked; scales in lateral line 45, 
329. E. susanze (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 44; depth 6}. 
D. VIII-10. A.I,8 L. 2. Cumberland R., abundant in 8. Ky. 
(To Mrs. Susan Bowen Jordan.) 
gg. Lateral line ceasing near middle of body. (Vaillantia ! Jordan.) 
« 
830. B. 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 4}; 
depth 54. D. X-10. A.1, 8. Scales 5-56-10. Vert.38. L. 2}. 
Til. to Ala. and Ark., common 8. W. (Boleosoma camurum Forbes). 
(xAepes, green; odpa, 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 oddos, complete ; xevrpov, spine. 
