102 



Bangs Synaptomys Cooperii 



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 cooperii and & stonei and indeed 

 Mr. Khoads states himself that there is none. 



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



fSkull No. collection of Dr. C. Hart Merriam. 



^Collection of E. A. & O. Bangs. 



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



|| Collection of Whitmer Stone [topotype of S. stonei]. 



IfThis 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 proportion 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 description* the 

 specific characters claimed for S. stonei. 



^American Naturalist, VoL 27, pp. 53 and 54, January, 1893, 



