264 KANSAS UNIVERSITY QUARTERLY. 



1. Oambarus simulans Faxon. 

 C. simulans, Faxon, '84. 



C. simu/ans, Faxon, '85, with fig. of male, F. I, and abd. app. of 

 male, F. I and II. 



1. Tributary of Medicine river. Barber county (coll. Washb. 

 Coll.), Messrs. Williams and Craigin, coll. (Faxon, '85, b.). 



2. Fort Hays, Ellis county (coll. Mas. Comp. Zool.) (Faxon, 

 '85, b.). 



2. Oambarus g-allinas Cockerell and Porter. 

 C. ga/Iinas, Cockerell and Porter, 1900. 



The material noted below I assign only provisionally to this 

 species. The specimens were collected during the summer of 

 1900, and placed in my hands. A full description was prepared 

 and was in the publisher's hands when my attention was called to 

 the paper by Cockerell and Porter. My material seems to agree 

 quite well with that of Cockerell, but I wish to compare specimens 

 of C. simulans Faxon as well as the material from New Mexico, 

 which Professor Cockerell has been so kind as to present to the 

 collection of the University of Kansas, before I assign this material 

 finally to a species. 



1. A slough, near Halstead, Harvey county, Kansas, (coll. U. 

 of K.) W. J. Baumgartner, coll. 



2. A small branch of the Chikaskia river, six miles northwest 

 of Caldwell, Sumner county, (coll. U. of K.) T. J. Kinnear, coll. 



In Jul}^ igoo, Mr. Baumgartner took a part of the material in a 

 slough, which connected in wet weather with a creek not a mile 

 away. The water was running more than usual on account of a 

 recent rain. No burrows were observed at this time. About 

 November 10 he again visited the locality and secured more 

 material. This time the animals were found in burrows. One of 

 these, about one foot deep, had its mouth below the surface of the 

 water. The others were along the bank close to the water's edge. 

 "Chimneys" were not very conspicuous. The burrows themselves, 

 so far as noticed, were unbranched, about three inches in diameter 

 and extending almost straight down for a distance not over one and 

 one- half- feet. One animal was found in each burrow. 



Mr. Kinnear's material — two small specimens, each slightly over 

 an inch in length — was taken in a little running stream. 



3. Oambarus gracilis Bundy. 



C. gracilis, Bundy, '76, male F. I and female. 

 C. gracilis, Bundy, '70, male F. I and female. 



