- GILL] NOTEWORTHY EXTRA-EUROPEAN CYPRINIDS 305 
it, as cheven or chivin (an English synonym of chub), dace, and 
roach. Its scientific name is Semotilus corporalis. It is by far 
the largest of the Eastern American Cyprinids and sometimes 
reaches the length of eighteen or even twenty inches, although one 
twelve inches long is regarded as a good sized fish. It prefers clear 
a Wil 
<A) NSN 
Fic. 47.—Semotilus corporalis, young. After Fowler. 
swift streams and affords considerable sport to the angler. When 
young it has quite a different appearance from the adult, being 
marked with a distinct lateral band and the form of the head is 
also different. 
A related species distinguished by the black spot at the base of 
the dorsal is the Semotilus atromaculatus, known as the creek chub 
Fic. 48.—Semotilus atromaculatus. After Baird. 
or horned dace. This has been closely observed in the spawning 
season by Professor Reighard, but no complete record of his observa- 
tions has been published. 
Both of these “chubs”’ are rather omnivorous feeders. They 
catch small fishes that come in the way, and also crawfishes, but 
depend mainly on insects and entomostraceous crustaceans as well 
as worms. A further considerable percentage of the food consists 
of filamentous algz and vegetable debris. 
Considerable difference of opinion prevails as to the gustatory 
quality of the chub. The opinion of Thoreau—“ it is a soft fish, 
and tastes like brown paper salted ’’—has been often quoted. In 
