HARRIS : DISTRIBUTION OF KANSAS CRAYFISHKS. 9 



A striking effect of the low temperature was noticed in the 

 effect on the hatching of the eggs. Many of the females taken 

 at the mouth of the cave carried eggs or recently hatched young, 

 while none of those taken in the other localities were found 

 with young at all. I believe I found young crayfish which had 

 but recently left the female in the vegetation near Boiling 

 Springs, in the James river. 



In the table following, the distribution by river systems of the 

 different species is given. For convenience, the rivers of the 

 state from which material has been reported have been ar- 

 ranged as follows : 



MISSOURI RIVER 



KANSAS RIVER 



Big Blue River 

 Republican River 

 Solomon River 

 Saline River 

 Smoky Hill River 



OSAGE RIVER 



ARKANSAS RIVER 



Medicine Lodge River 

 Chikaskia River 

 Little Arkansas River 



The tributaries of any stream are arranged in order, begin- 

 ning with the lower and passing towards the upper portion of 

 the stream. Those tributaries emptying outside the state are 

 designated by an asterisk. 



When it is impossible to determine from which of two or 

 more streams a lot of material is reported, as is often the case 

 when the localities given is a country traversed or drained by 

 two rivers, or a town situated on some large stream, or where 

 two streams join, it is reported from each, with the catalogue 

 number followed by a question mark. Of course, in the greater 

 number of these cases, the species will be found to occur in 

 greater or less numbers in each locality. The one thing to be 

 desired is, that collectors would furnish full data with their 

 material. 



Whenever possible, the name of the stream from which ma- 



