HARRIS : CRAYFISHES GENUS CAMBARUS. 81 



Cambarus carolinus Erichs.^'^ 



13. Indian Territory. 



1. [Trib. Arkansas R.], "Among the Cherokeea." (F., 90.) 



32. North Carolina. 



1. [Tar R.], near Greenville [Pitt county]. (F.,85.) 



37. Pennsylvania. 



1. [Ohio, Alleghany or Monongahela R], Shenley Park, Fern Hollow, and 

 from a spring in Moon township, Allegheny county. (Williamson, '01.) 



41. Tennessee. 



1. [Clinch R.], Cumberland Gap [Claiborne county]. (F., 8.3.) 



45. Virginia. 

 1. [Trib. Tennessee R.], Pennington's Gap, Lee county. (F., 8.5.) 



47. West Virginia. 

 1. [Cheat R.], Cranberry Summit, Preston county. (F., '85.) 



A species reported from the widely separated localities of 

 northeastern Indian Territory, Allegheny county, Pennsylvania, 

 and the remote Appalachian mountain region of Virginia and 

 West Virginia. 



According to Mr. Uhler (Faxon, '84 and '85), this species in 

 the Appalachian region makes mud chimneys, like C. diogenes, 

 which it seems to represent in the mountain regions, C. diogenefi 

 belonging to the lowlands. 



Williamson ('01) has studied the habits of C. dubivs Fax. 

 in Allegheny county, Pennsylvania, where it is represented by 

 a local variety. The chimneys of C. diogenes are usually con- 

 structed more neatly than those of C. dubius, while the burrows 

 of C. dubius are usually more intricate In both species the bur- 

 rows of younger animals are usually small tunnels, ending in a 

 pocket, placed at such a depth that it is filled with water. Sep- 

 tember 24, one burrow, typical of a large individual of C. dubius, 

 contained an adult female and forty-seven young, ranging from 

 three-fourths to one and one-eighth inches in length. The 

 chimney, about three inches high, broad and flattened, was not 

 composed of compact pellets, as is usually the case with C. di- 

 ogenes, and was sealed at the top. The burrow, circular, about 

 one and one-half inches in diameter, and with smooth sides, ran 



15. All the localities except North Carolina are for O. dubius Fax., the name C. carolinus 

 Erichs. being used in view of the recent paper of Hay ('02). 



3-Bull., No. 3. 



