Loue 
274 Fishes of the Ohio 
and is taken in great numbers by means of seines. It is com- 
mon in the streams of the middle, northern and western States. 
During winter it is a permanent resident, and does not even 
seek the deeper waters. As an article of food it is not valued. 
Levciscus. Klein. 
L. dorsalis. Raf. Common Chub. 
Semotilus dorsalis. Bigback Chubby. Raf. Ich. Ohien. p. 49. 
- *  Smooth-headed Chubby. Kirtland's Rep. p. 169. 
Plate XXII. Fig. 1. 
Head full, round and conical, united to the back with a 
deep suture. +» 
` Body cylindric, back gibbous before the dorsal fin, and lon- 
gitudinally sulcate. 
_ Caudal fin slightly bilobed, the other fins rather small ; the 
pectoral do not attain to the ventral, the dorsal is anterior to 
the vent. | 
Length 6 to 10 inches. 
. Color. Fins fulvous, the anterior part of the base of the 
dorsal and the centre of the base of the caudal marked with a 
dark brown or black spot; head and back bronzed ; a brown 
- stripe extends'from the base of the tail to the head above the 
lateral line} abdomen white and silvery. . i 
D.8; C. 20; P?; V.8; A.8. 
Hab. All of the western streams. E x 
Observations. We have been disposed to consider this as 
only the female of the |S. cephalus, but dissections do not 
sustain us in that view, and we are compelled to follow Rafi- 
nesque's arrangement. He makes it a distinct species. RON 
It is difficult to distinguish the young of the two species 
but’ the smaller size of the head and mouth, and the more 
graceful form of the body of the present species, will always 
enable us to draw the lines of distinction between the two that 
