126 KANSAS UNIVERSITY SCIENCE BULLETIN. 



light and heat outside, where the water is full of frogs and 

 eyed crayfishes. . . . The specimens become opaque when 

 put into alcohol; they are almost transparent when alive, so 

 much so that the action of their internal organs can be observed. 

 Repeated tests assured me the animals were blind, though very 

 sensitive to the sunlight. They died soon after catching, even 

 in water frequently changed." 



"The wells from which specimens have been taken are about 

 half a mile from Center creek, the water-level in wells and 

 creeks being nearly the same. The wells were nine or ten in 

 number, from five to eighty rods apart, from eleven to thirty 

 feet in depth, deeper in the higher ground, and having a depth 

 of water varying from two to four feet. In some wells the 

 rock at the bottom had been excavated. The water is what is 

 commonly called hard — i. e., impregnated with lime. After 

 rains some of the wells have softer water than others, and 

 the water stands higher in these wells, indicating closer con- 

 nection with surface-drainage. All of the wells soon regain 

 the common level. They become low in times of drought, but 

 never dry out entirely, as is the case with a cave spring near by, 

 about twelve feet above the level of the creek. The tempera- 

 tures taken in the wells at low water ranged from 52+ deg. to 

 54+ deg. F. During a storm, in the well having the highest 

 water, the temperature rose to 57+ deg. When the mercury 

 stood at 90 to 95 deg, outside the temperature was only 54 deg. 

 in Wilson's cave." 



Cambarus schufeldtii Fax. 



17. Louisiana. 



1. [Mississippi R. or Gulf of Mexico], near New Orleans [Orleans county]. (F., 

 '85.) 



Cambarus simulans Fax.^^ 



15. Kansas. 



1. [Trib. Smoky Hill R], Fort Hays [Ellis county]. (F., '85.) 



2. Tributary of Medicine Lodge river. Barber county. (F.,'90.) 



3. A slough near Halstead, Harvey county. (Harris, '00.) 



i. A small branch of the Chikaskia river, six miles northeast of Caldwell, Sum- 

 ner county. (Harris, '00.) 



5. A stream near Wichita, Sedgwick county. (Harris, '02.) 



6. A slough northeast of Caldwell, Sumner county. (Harris, '02.) 



23. Professor Hay informs me that he has examined the types of C. gallinns Ckl. and Porter, 

 in the United States National Museum, and concludes that the material should be referred to 

 C. simulans. In this paper, the material described by Cockerell and Porter, and the material 

 which I provisionally referred to C. gallinus in former papers, will be treated under C. simulans. 



