21 



THE CRAYFISH OF OHIO. 



R. C. OSBURN AND E. B. WILLIAMSON. 



1. Cambarus hartonii, Fabr. Cincinnati and 

 Columbus (Hagen); Marietta and Yellow Springs 

 ( Faxon ); Oberlin ( O. J. Luethi); Franklin Count3' in 

 Alum Creek and tributaries of Big Walnut and Big 

 Darby (Osburn and Williamson.) 



2. Cambarus hartonii var robusta, Gir. A female, 

 doubtfully identified by Faxon as robusta, was taken 

 by Mr. J. B. Parker in the Big Jelloway, Knox Co. 



3. Cambarus dubius, Faxon, (?) Oberlin, (L. M. 

 McCormick.) 



4. Cambarus diogenes, Gir. Kelley's Island as C 

 obesus, ( Hagen ) ; Oberlin ( O. J. Luethi ) ; Lockbourne, 

 FVanklin Co. [Osburn and Williamson.] 



5. Cambarus argillicola, Fax. Kelley's Island 

 [Faxon]. In Faxon's Revision of the Astacidae report- 

 ed from Kelley's Island as C diogenes. The correction 

 is made in Faxon's Notes on North American Astaci- 

 dae. 



6. Cambarus propinquus Gir. var sanhornii Fax. 

 Oberlin ( Faxon ) ; Alum Creek, Franklin Co. [Osburn 

 and Williamson]; Lake Erie, Lorain Co. [L- M. Mc- 

 Cormick]; Big Jelloway, Knox Co. [J. B. Parker.] 



7. Cambarus virilis. Hag. Miami River, Dayton 

 [ Hagen.] 



8. Cambarus inmmunis, Hag. Huron River, 

 Huron, Ohio [L. M. McCormick]; Lake Erie, Lorain 

 Co., twenty-two miles from shore [L. M. McCormick]; 

 Mills Creek, Sandusicy [Professor D. S. Kellicott.] 



9. Cambarus rusticus, Gir. Cincinnati [Hagen]; 

 Kelleys Island, Miami River at Dayton, Yellow Springs 

 and Ohio River at Cincinnati [ Faxon]; Sandusky Bay 

 [Professor D. S. Kellicott]; Franklin Co. generally 

 [Osburn and Williamson.] 



10. Cambarus rusticus var placidus Fax. Hell 

 Branch, Franklin Co. [Osburn and Williamson.] 



Note.— In the preparation of the above list we have made use of note^ 

 furnished by Professor A. A. Wright. Our own material has been examined 

 by Walter Faxon, and specimens are in the Ohio State University Zoological 

 Museum. 



