SOME NOTES ON THE HABITS AND DISTRIBUTION 
OF WISCONSIN CRAWFISHES. 
By S. Graenicher. 
All the crawfishes inhabiting that portion of the United States 
and Canada lying east of the Rocky Mountains belong to the 
genus Cambarus. This genus has been split up by Dr. A. E. Ort- 
mann 1 into five subgenera, three of which are represented in the 
fauna of our state. The following seven species of Cambarus 
(sens, lat.) are known to occur within the boundaries of Wis¬ 
consin : 
Subgenus Cambarus (sens, strict.) Faxon. 
1. C. gracilis Bundy. 
2. C. blandingi acutus Girard. 
Subgenus Faxonius Ortman. 
3. C. propinquus Girard. 
4. C. rusticus Girard. 
5. C. virilis Hagen. 
6 . C. immunis Hagen. 
Subgenus Bartonius Ortmann. 
7. C. diogenes Girard. 
In the collection of the Public Museum of Milwaukee all of 
these are represented with the exception of C. rusticus, no speci¬ 
mens of which have been seen by the writer from any part of the 
state, although a sharp lookout has been kept for this species dur¬ 
ing the past three years. 
According to previous records 2 it occurs in Racine Co., Sauk 
1) A. E. Ortmann. The mutual affinities of the species of the genus 
Cambarus and their dispersal over the United States. Proc. Am. 
Phil. Soc. Vol. 44, pp. 91-136, PI 3. 
A. E. Ortman. Procambarus, a new subgenus of the genus Cam¬ 
barus. Ann. Carn. Mus. Vol. 3, No. 3, pp. 435-442. 
2) W. F. Bundy. The crustacean fauna of Wisconsin. Geology of Wis¬ 
consin, Vol. 1, pp. 402-405. 
See also J. Arthur Harris. An ecological catalogue of the crawfishes 
belonging to the genus Cambarus. Kans. Univ. Sc. Bull. Vol. 2, 
No. 3, pp. 51-187, PI. I.-V. 
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