DEPARTMENT OF SCIENCES. 



A LIST OF THE CEU3TACEA OF WISCONSIN. 



With Notes on some New or Little Known Species. 

 By Will F. Bundy, M. D., Sauk City. 



The crustacean fauna of Wisconsin has as yet received so little 

 attention that it is at present impossible to present, with even ap- 

 proximate completeness, a list of the species inhabiting her waters. 

 The various dredgings in Lake Superior under the auspices of the 

 general government, and a dredging expedition off Kacine pre- 

 viously reported to this academy by Dr. P. E. Hoy, have fur- 

 nished' almost our whole knowledge of the crustacean fauna of 

 the lakes on our borders, while the interior of the state remains al- 

 most entirely unexplored. A species of cambarus (0. virilis) 

 from Sugar river, another (C. propinquus) from Madison, and an 

 amphipod, (Orchestes dentatus), from the latter place, are, I believe, 

 the only crustaceans that have been accredited to the interior of 

 the state till within a very recent period. That our streams and 

 lakes are extremely rich in crustacean life, is abundantly attested 

 by the fact that not a single locality has been explored with any 

 degree of thoroughness without revealing the presence of several 

 species of the higher genera. 



The species included in this list, with the exception of those 

 found only in the great lakes, were all taken within the compara- 

 tively limited area included in the counties of Racine, Jefferson, 

 Dodge, Fond du Lac, Oatagamie, Dane, Sauk and Richland. I 

 have received specimens from but a single locality each, in the 

 greater number of these. 



The following list embraces all the species of the higher orders 

 known to inhabit ihe waters of the state : 



Order : Decapod a. 



Family: Astacidoe. 



Cambarus acutus. Girard. 

 C. stjgius. Bundy. 

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