° 1914 J FiGGiNS, Ultraminute Distinctions. 67 



while this peculiarity is absent in Colorado birds. Briefly, then, 

 the result of introduction has been a tendency towards eliminating 

 the reds and browns, the development of olive to replace those 

 colors and in increasing the purity of the blacks and grays. 



Since the comparatively short period of introduction has resulted 

 in such marked changes in coloration, it is but natural to expect 

 possible differences in measurements. That they are so pronounced 

 however, is a matter of surprise. In offering these it is understood 

 that the tables of lengths are of little value when taken from dried 

 skins; but they are included. While the length measurements of 

 Colorado specimens are incomplete, those given are from birds in 

 the flesh and will be of value when opportunity permits like measure- 

 ments of California specimens. 



Measurements of Lophortyx gambeli from California} 



1 All measurements in inches. 



