236 PROCEEDINGS OF THE ACADEMY OF 



brown above, and in the color of the abdomen and under tail 

 coverts being of a pale dull ochreous, whereas in the others these 

 parts are clear yellow ; the red color on the inner tail feathers 

 occupies the outer portion of the inner webs for half their width, 

 this color blends with the dark color next the shaft, the separa- 

 tion of the colors is not so clearly marked as in mexicanus. The 

 extent of the red color on the tail feathers is a good character on 

 which to separate the allied species, in M. cinerascens this color 

 occupies the entire web up to the shaft ; in mexicanus it takes up 

 about four-fifths, leaving a well-defined dark line next the shaft ; 

 in yucatanensis it extends over half of the inner web ; but in laiv- 

 rencii it exists only as a mere bordering, and in many specimens 

 it is very faint. 



[December 5, 



