4 KANSAS UNIVERSITY SCIENCE BULLETIN. 



I wish to express here ray gratitude to my sister, Nellie 

 Harris, without whose kind assistance in this and other work 

 the appearance of this material at the present time would have 

 been impossible. My thanks are also due those who have col- 

 lected material in various parts of the state. 



The greater part of the material belongs to the private collec- 

 tion of the writer, but is deposited at the present time in the 

 museum of the University of Kansas. 



1. Cambarus simulans Faxon. 



I have not seen either of the two lots of material assigned to 

 this species. It will be seen that the territory from which it is 

 reported, while much the same as that from which is taken. the 

 material provisionally assigned to C. gallinas, lies a little to the 

 west and extends north beyond the Smoky Hill river, while the 

 material provisionally reported as gallinas is confined, so far, to 

 the territory drained by the Arkansas. 



2. Cambarus gallinas Cockerell and Porter. 



As in my catalogue, I assign only provisionally to this species 

 material from : 



3. A stream near Wichita, Sedgwick county ; Mr. Willis 

 Henderson, coll. 



4. A slough northeast of Caldwell, Sumner county; T. J. 

 Kinnear, coll. 



Mr. Kinnear's material was taken at a small slough four 

 miles northeast of Caldwell. The slough had been dry all sum- 

 mer. Tt will be remembered that the drought of the summer of 

 1901 was very severe, but a spring a little distance from the 

 edge still contained a little pool of water, perhaps three feet in 

 diameter, although it had ceased to run into the slough. In 

 this little pool of water a few small crayfish, about one inch in 

 length, were noticed ; while none of the small specimens were 

 taken, they undoubtedly belong to the same species as the eight 

 adults secured at the same place. 



The specimens were secured in digging a well in the old spring. 

 They had burrowed down through the loose surface soil for 

 from six to thirty-six inches, depending upon whether the^bur- 

 rows were at the center or on the edge of the old basin of the 

 spring. The burrows, which were about two inches in diameter, 



