NORTH AMERICAN "FRESH-WATER FISHES. 11 
CYPRINIDA. Puare 5. 
SEMOTILUS ATROMACULATUS (Mitchill). 
CHILONEMUS CEPHALUS. Baird. 
The Horned Dace, or Creek Chub. 
Fig. 1. Side view of skull. 
. Top view of skull. 
. Lower view of skull. 
. Rear view of skull. 
. Lower pharyngeal bones and teeth. 
Right lower pharyngeal. 
. Outline of section of the body. 
. Scale from the lateral line. 
CS ONDA SP ~- Ww 
. Scale from above the lateral line. 
. Scale from below the lateral line. 
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. Young example. 
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bo 
. Outline of body seen from above. 
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oo 
. A partly grown example, probably a female. 
The Horned Dace is one of the commonest of our fresh-water fishes, abound- 
ing in all suitable localities from the Housatonic River to Montana, and south- 
ward to South Carolina, Tennessee, and Arkansas. It especially frequents small 
brooks and “spring-runs,” in which streams it is often the largest inhabitant. 
It reaches a length of 8 to 10 inches. 
