103 



Bangs — Synaptomys Coo^ierii 



Many of the specimens I had were unmeasured, and as the 

 hind foot is the only measurement that can be taken with accu- 

 racy from the dried skins, I give this only [in millimetres]. 



The few that were measured show that there is no difference in 

 size or proportion between S. coopern and S. stonel and indeed 

 Mr. Rhoads states himself that there is none. 



*Skull No. collection of U. S. Department of Agriculture. 



tSkuU No. collection of Dr. C. Hart Merriam, 



jCollection of E. A. & (). Bangs. 



^Collection of S. N. Khoads [type of S. stonei]. 



llCoUection of Whitmer Stone [topotype of S. stonei]. 



IJThLs measurement is a little too short, as the bone is broken slightly. 



From the above measurements, it will be seen that there are no 

 differences of proi)ortion in the skulls of ;S'. cooperii and S. stonei 

 more than a mere individual variation of the very slightest degree. 



I shall now quote from Mr. Rhoads' original descri2)tion* the 

 specific characters claimed for *S'. stonei 



*Americfiii Naturalist, Vol. 27, pp. 53 and 54, January, 1893. 



