HARRIS : CRAYFISHES GENUS CAMBARUS. 129 



lected them from Green's lake, a seraiartificial lake with mud 

 bank, and the Gallinas river in the quiet pools. This river is a 

 swiftly flowing mountain stream, with a rocky bottom in most 

 places. Great numbers were found in the neighborhood of the 

 irrigation dam. . . . Females taken in May had the swim- 

 merets loaded with eggs." 



In a letter of November 10, 1902, Mr. J. D. Tinsley, who col- 

 lected C. gallinus at Roswell, N. M., informs me that he took 

 his material in an irrigating canal when the water was quite 

 low for a few hours. They were quite abundant and had bur- 

 rowed considerable in the sides and possibly the bottom (?) of 

 the canal below the usual water-level. He did not remember 

 seeing any mud chimneys. The canal carries clear, very sel- 

 dom muddy, water with a slow but decided current. 



This species, then, is sometimes found in running streams 

 and sometimes in burrows, apparently resorting to the burrow 

 during dry weather. 



Faxon ( '85 ) says in his description : ' ' The full cephalothorax 

 and large abdomen seem to indicate that this is not preeminently 

 a burrowing species, like its allies, C. gracilis, C. advena, etc." 



Cambarus sloanii Bundy. 



12. Indiana. 



1. [Ohio R.], New Albany, Floyd county. (Hay, '96.) 



2. [Ohio R.], Madison, Jefferson county. (Hay, '96.) 



3. [Blue R.], Marengo, Crawford county. (Hay, '96.) 



1(>. Kentucky. 



1. In Kentucky {^fide Bundy). (F. '85.) 



So far as yet reported, it is confined to southeastern Indiana. 



Hay ( '96) says : " This species is quite abundant in southern 

 Indiana, frequenting the muddy banks of running streams. Doc- 

 tor Sloan, for whom the species was named, has made observa- 

 tions on its habits as follows : 'He commences on the bank of 

 the stream, burrows below the bed, and has an opening two or 

 more feet out in the stream, where he sits watching for anything 

 that may turn up, w^ith a safe retreat.'" 



6-Bull., No. 3. 



