218 



Brewster on a Nezv Marsh Wren. 



TAu 



Ljui 



gray extreme of Troglodytes a. aztecus. Indeed I find it possible 

 to select specimens of the two which, when laid side by side 

 on their backs, are scarcely distinguishable by color alone. 



For comparison with the following measurements of the ten 

 specimens of griseus I have added these of an equal number of 

 representatives of marianee and palustris selected quite at random 

 from the larsre series before me. The measurements are in inches. 



