Jan. 30" 

 1902 . 



BANGS CHIRIQUI BIRDS 



27 



Colo?-. — Adult male : forehead dusky green, with little lustre ; hind neck 

 and back shining, dark, metallic green blue; upper tail coverts dark blue, 

 with dark subapical band and slight buffy tips; basal portion of rectrices 

 blue, rest black, with grayish white tips to two central feathers ; sides like 

 back, but not so brilliant; centre of belly dark gray; under tail coverts dark 

 gray fringed with whitish ; a well-defined chestnut gular stripe ; auriculars 

 blackish. 



Adult female similar to the male above ; below, dark gray, with only slight 

 metallic green blue on sides ; gular stripe more extended and paler in color ; 

 also slight superciliary and malar stripes, of pale chestnut, enclosing the black 

 auriculars; all the rectrices tipped with grayish white, the light tips of the two 

 central feathers much longer than in the male. 



Young male, similar to female, but the light tips of central rectrices shorter 

 (as in the adult male). 



measurements (in millimeters). 



Remarks. — Costa Rica and Chiriqui specimens of this wide- 

 ranging Phaethornis have always been referred to Bourcier and 

 Mulsant's subspecies emilice, described from Bogota. On carefully- 

 comparing a large number of skins I find that the northern 

 examples constitute a race more different from either true P. guy 

 of Trinidad and Venezuela or P. guy emilicB of Bogata than are 

 these two from each other. P. guy coruscus differs from the 

 southern races in its much more glittering back and sides and in 

 the more bluish color of these parts, besides having a shorter bill. 



1 In Columbian examples of P. guy eniih'er the wing averages about the same as in the present 

 series ; the culmen is, however, longer, measuring about 44 mm. in the male and 43 in the female. 



