8 KANSAS UNIVERSITY SCIENCE BULLETIN. 



bed of loose sand. It sometimes, though rarely, goes dry in 

 places so far as the surface is concerned, but it is said that water 

 can always be found by digging a few inches into the sand of 

 the bed. 



During the early part of June, 1901, while near Springfield, 

 Greene county, Missouri, I had the opportunity of making a 

 few observations on the habits of C. neglectus. In the James 

 river, near Galloway, about eight miles southeast of Spring- 

 field, this was the only species observed, although probably 

 not the only one occurring in the river. At this place the 

 James river is a rather swift-flowing stream, with a rocky bed 

 and with rather high wooded hills along the sides. The stream 

 is quite shallow in the swiftly running places. The crayfish 

 were quite abundant, being found under the loose stones and 

 resting in the strands of the rich vegetation, which stood 

 almost horizontal in the swiftly flowing water. 



The specimens were very plentiful around Boiling Springs, 

 a place where one of the cold, underground rivulets of the 

 region breaks through the rocks in the bottom of the stream. 



In a clear, rocky stream, 2 shallow in most places, flowing 

 between high hills, about four miles northwest of Springfield, 

 crayfish were found in abundance. The smaller and by far the 

 more numerous species was C. neglectus. The animals were 

 very active, darting from stone to stone when disturbed, but 

 usually remaining under cover but a short time. 



In a stream flowing from Galloway Cave, at Galloway, Greene 

 county, C. neglectus and C. rusticus were taken. At the mouth 

 of the cave, C. neglectus was by far the more abundant, if not 

 the only species, being found in great abundance under loose 

 stones at the very mouth. The water here has practically the 

 same temperature as that on the inside. The temperature on 

 the inside of the cave is said to remain at fifty-seven degrees F. 

 winter and summer. The animals were very inactive, the cold 

 water, apparently, numbing them to such an extent that it was 

 not at all difficult to take them with the hand. 3 A little dis- 

 tance down the stream, where the water was much warmer, the 

 animals were noticed to be as active as ever. 



2. I am uot sure, in a trip across country, which of the two creeks, which flow together in 

 this vicinity, I examined. 



3. The water here is i>robably not more than fifteen degrees above that in whicli C. virilis 

 was found to be so numb as to be almost incapablo of movement. See Harris, Annotated Cata- 

 Logue. 



