144 Illinois State Laboratory of Natural Hidorij. 



the fully-scaled form was taken from Dead Man's Slough Au- 

 gust 18. The food of an example from Broad Lake consisted of 

 vegetation and moUusks, the former constituting two thirds of 

 the material in the alimentary canal, and consisting of dead 

 leaves and of seeds. The seeds were, as far as could be deter- 

 mined in a hasty examination, chiefly those of trees and weeds. 

 Elm seeds, ragweed seeds and the seeds of Polygonum were 

 noted. The MoUusca were partly thin-shelled clams with an 

 occasional Sphajrium, and partly snails, such as Physa and 

 Lioplax. All the matter was apparently gathered from the bot- 

 tom. No trace of crustacean or insect food could be detected. 

 Dead Man's Slough, Broad Lake, Quincy Bay, and pool 

 south of Quincy. 



Family Catostomid^. ( Suckers. ) 



Red Horse {Moxosfonia aureola^ Les. ). 



Rare. Seen only on two occasions. 



Moss Lake, five examples 5.50 to 6 inches long ; Wood 

 Slough. 



Red Horse {Moxostoma macrolepidotuni^ Les., rar. diiquesnci). 



Occasional young 4.50 to 12 inches long were taken. 



Localities : Moss Lake, Willow Slough, Long Lake, Broad 

 Lake, Wood Slough. 

 Common Sucker {Catostonins teres, Mitch.). 



Rare. Those taken were about six inches long. 



Localities : Moss Lake, Wood Slough, slough south of 

 Quincy. 

 Carp, River Carp {letiobiis velifer^ Raf.). 



Generally distributed but not very common, and nearly all 

 young. Examples from 3.50 to 7 inches long were taken. 

 Frequent in the slough at south edge of (,)uincy. 



Localities: Harkness Slough, Bear Creek, Goose Lake, 

 Moss Lake, Willow Slough, Long Lake, Broad Lake, Wood 

 Slough, pool south of (^)uincy. 

 (^uiLL-BACK Buffalo {letiohus huhalns, Raf.). 



Not observed in any of the bottom-land pools outside the 

 levee, excepting Broad Lake. The young from 3 to 5 inches 

 lon<' were rather common inside the levee. The only large 



