142 Illinois State Laboratory of Natural History. 



Lake, inside the levee. The adults, on the other hand, were 

 usually scarce: but in the pool south of Quincy both young 

 and adults were common, — a fact explained by the situation of 

 the pool east of a railroad embankment and at a considerable 

 distance from the river. The pool is consequently very early 

 isolated, and the adults which make their way in to spawn are 

 prevented from escaping. Predaceous fishes confined in the 

 sloughs depend very largely on this shad for sustenance. 



Localities: Harkness Slough, Libby Lake, Moss Lake, 

 Dead Man's Slough, Claus Lake, Quincy Bay, Long Lake, Broad 

 Lake, Wood Slough, pool south of Quincy. 



Ohio Shad {Clupea clirysocldoris.^ Raf.). 



Probably not common. The only specimens seen were a 

 half dozen young, 2.62 inches long, from Moss Lake, Long 

 Island, Aug. 14. 



Family Cyprinid.^.. (Minnows.) 

 Golden Shiner, Bream {Notemiyonus chrysoleucKS, Mitch.). 



Frequent. Abundant in Libby Lake, where examples 5 

 inches long were seen. 



Localities: Harkness Slough, Libby Lake, Dead Man's 

 Slough, Claus Lake, Long Lake, Wood Slough, pool south of 

 (Juincy. 



Hyhopsis amhlops^ Raf. 



Common in Willow Slough and of large size, some examples 

 measuring 4.5 inches in extreme length. Elsewhere taken only 

 in Broad Lake and Wood Slough, from each of which one or 

 two examples were obtained. 



Phenacobius teretuliis, Cope. 



A single example of this variable minnow was taken from 

 Broad Lake, August 9. 



Notropis atherinoides, Raf. 



Not found common exce])t in Moss Lake and in the river. 

 On the sand bars of the latter it is caught in numbers for bait. 

 It was sometimes seen hurrying up stream nefir the shore 

 against the force of the current. 



Localities: Moss Lake, Mississippi Kiver, Broad Lake, 

 Long Lake. 



