96 KANSAS UNIVERSITY SCIENCE BULLETIN. 



Of a lot of thirty-five specimens collected on the evening of 

 April 2, 1892, twenty-nine were males and six were females. 

 At this date they were in copulation. Eggs were laid from 

 April 18 to 30. I have frequently found females bearing well- 

 grown young in small streams, and, therefore, do not think the 

 habit of burrowing is adopted as a protection to the young gen- 

 eration, but rather to furnish a retreat during the dry summer 

 months." 



The portion of Schufeldt ('97) dealing with the crayfish is 

 practically a reprint from his other paper ('96). 



Harris ('00) reports the taking of a female with swimmerets 

 loaded with eggs in a not very late stage of development May 

 3. Since, in an examination of the same ditch four days later, 

 he found many burrows in the bank, but no adult individuals 

 in the open water, he considered that there was an indication 

 that the eggs pass through the most of the stages of their de- 

 velopment in the burrow, as is certainly the case with C. gra- 

 cilis. In reporting material from Boulder, Colo. (5.2), he 

 quotes a part of a letter from Francis Ramaley, as follows : 

 "We find crayfish here in ditches and ponds, much as in other 

 localities, but as most of the ditches are dry part of the year, 

 the animals are not abundant. Our streams are mostly swift- 

 running, and crayfish are seldom found in them. I have not 

 noticed the animals at high altitudes, but they may occur there, 

 doubtless up to 8000 feet at any rate." 



See, also, colors of Cambarus. 



Cambarus dubius Fax. 



See C. carolinus Erich. 



Cambarus erichsonianus Fax. 



1. Alabama. 



1. Big Cahawba river [Bibb, Perry or Dallas county]. (F. '98). 



41. Teiines.see. 



1. Rip Roaring fork, five miles northwest of Greeneville [Greene county]. (F., 



'98.) 



2. Estanaula creek, Athens [McMinn county]. (F., '98.) 



8. Matlock Spring creek, near Athens [McMinn county]. (F., '98 ) 



Central Alabama and southeastern Tennessee, in tributaries 

 of the Alabama and Tennessee rivers. 



