OCOXOMOWOC LAKE, ETC. 35 



The ancient mound-builders, that mysterious people Avho pre- 

 ceded the present Indian races, once occupied the banks of these 

 lakes as is clearly shown b}^ their numerous works; and they prob- 

 ably derived no inconsiderable portion of their subsistence from fish. 

 No shell-heaps have been found to indicate their use of the abund- 

 ance of Unio and Anodons found in these lakes. The works of the 

 mound-builders are rapidly disappearing, being levelled by the plow 

 of the farmer. 



Besides the Unios, these lakes abound in other bivalve and uni- 

 valve moUusks; crustaceans and worms, and the larvss of insects 

 appear in wonderful numbers. These, with the innumerable min- 

 nows found in shallow waters, afford at all times an abundant 

 supply of food for the larger fishes. Loons, geese, ducks, gulls, 

 plover, and many other birds swim upon the waters or wade along 

 the margin. 



Among the fishes to be found are the following: 



Perch, Perca flayescens, Cuvier. 



Wall-eyed Pike, Lucoperca americana. 



Striped Bass, Roccus chr3"sops, Girary. 



Rock Bass. 



Stone-Roller, Etheostonia. 



Black Bass, Micropluas nigricans, Agassiz. 



Suisr-FiSH, Pomotis. 



PuMPKIJSrSEED. 



Shixer. 



Sheephead, Haploidonotus grunnieus. 



Stickle-back, Applissinconstans, Kirtland. 



Pickerel, Esox, Lesueur. 



Sisco, Argysosomus sisco, Jordan Am. Nat., 1875, p. 135, lud. 

 Geol. rep. 1875, p. 190. 



Sucker, Catastomus. 



Red-Horse, Plychostonus. 



Cat-fish, Amiurus catus, Cuvier. 



Bull-Head. 



Bill-Fish, Lepidosteus oxyurus, Rafinesque. 



The Salmon and Brook-trout are reared artifically, and have been 

 introduced into some of the lakes. 



Young salmon (Salmo salar) and the brook-trout_(S. fontinalis,) 



