272 Fishes of the Ohio 
Exociossum. Raf. 
E. dubium. Kirtland. The Sucker-mouthed Chub. 
Exoglossum Lesueurianum. Rough-nosed Dace. Kirtland’s Rep. pp. 169-193. 
Plate XXI. Fig. 1. 
Head somewhat elongated ; eyes small, prominent; upper 
jaw projects two lines beyond the lower, which is small, semi- 
. Circular, and mostly concealed by the projection of. the upper 
when the mouth is closed ; lips circular, the lower reflected, 
after the manner of the Catostomi, only smaller and less 
fleshy. 
Body gibbous on the back, before the dorsal fin, cylindri- 
cal, slightly compressed on the sides; abdomen full; scales 
small oval, 
Dorsal and anal fins trapezoidal; caudal fin bilobed, the 
upper lobe acuminate, the lower obtuse; pectoral fin fal- 
cate, subovate. - i 
Color. Irides, golden yellow, head and back olive, opet- 
culum iridescent; sides dusky, abdomen white, fins fulvous. 
Length, from 4 to 6 inches. 
Hab. Yellow Creek, Poland, Trumbull Co., Ohio. 
D. 8; C. 90; A. 1; V. 8; P. 14. ed 
. Observations. "The only locality in which we have met 
with this fish is in the deep and dark glens of Yellow Creek, 
below the village of Poland. It there confines itself to the 
ripples in the most retired situations, where the stream, Over 
shadowed with clusters of the. spruce pine, winds among — 
rocks. During the spring it readily bites at a baited hook, 
and may be taken in considerable numbers, At that season 
the males are thickly armed, on both the head and body, with 
spinous tubercles, which are deciduous, and drop off at the 
approach of summer, " 
We formerly supposed it to be the Cyprinus Mazilingud 
of Le Sueur, the Exoglossum Lesueurianum of Raf., but 2 
