272 KANSAS UNIVERSITY QUARTERLY. 



2. I refer to this species with a. little hesitation, material col- 

 lected in Russell county (coll. U. of K.), W. S. Sutton, coll. 



Mr. W. S. Sutton, of the Department of Zoology, University of 

 Kansas, who collected the above material, kindly furnished me 

 with some observations on their habits. He found them July 14, 

 burrowing under tussocks of grass on the edge of a small stream 

 in Russell county, Kansas. A first-form male and a female were 

 usually found in each burrow, both taking part in the work of 

 excavation. The whole burrow was under water, running back at 

 first horizontally, then sometimes downward at various angles. The 

 burrows examined ranged from fifteen to twenty-five inches in length 

 and were somewhat enlarged and sometimes branched at the end. 



In burrowing, the mass of mud was pushed out in front of the 

 animal, being held between the anterior end of the animal and the 

 chelae, which were held with the inner magins close together, 

 while the meros was held well up and close to the body, thus 

 forming a sort of prismatic or pyramidal shaped space between the 

 chelae and the anterior end of the thorax. Mr. Sutton is firmly 

 convinced that the mass of mud was held between the chelae and 

 the body to prevent the mass from going to pieces while being 

 moved along in the water, since when a stone was to be removed 

 it was simply pushed along in front of the chelae. 



As was stated above the whole burrow was made under water, 

 and no attempt was made to construct anything like a 'chimney' 

 out of the mud removed. This was simply pushed out of the 

 mouth of the burrow thus forming a 'dump' such as is frequently 

 seen at the mouth of hillside coal mines. The crayfishes which 

 build regular chimneys usually burrow at night, but these speci- 

 mens were actively at work at noon, when they were taken. 

 10. Cambarus neglectus Faxon. 



C. 7ieglcctiis, Faxon, '85 b. 



C. 7ieglectus, Faxon, '90. 



I. Mill creek, Wabaunsee county (coll. Washb. Coll.), F. W. 

 Craigin and J. B. Fields, coll. (Faxon, '85, b). 



2 Republican river, near Guy, Cheyenne county (coll. Mus. 

 Comp. Zool.), (Faxon, '90). 



3. Sappa creek, Oberlin, Decatur county (coll. Mus. Comp. 

 Zool.), (Faxon, '90). 



This is so far the only species with a carinated rostrum re- 

 ported from our state and for this reason it will be all the more 

 easily recognized. It has been collected from various localities in 

 Arkansas, Missouri and Texas by S. E. Meek (see Faxon, '98), 

 and a determination of its distribution in our state is desirable. 



