FAMILY TROCHILIDAE 293 



glossed more or less with greenish blue ; femoral and lumbar tufts 

 white. 



Adult female, above, sides, and wings similar to male; lateral 

 rectrices with a bluish black subterminal bar and white tip ; under- 

 neath white from chin to lower abdomen, with a broad central stripe 

 of greenish blue, this in some more or less black on foreneck ; under 

 tail coverts bluish green, tipped with white. 



Immature, like female, but with the white central area on the 

 lower surface bordered widely with rufous, and the under tail coverts 

 with a narrow subterminal band of dull rufous at the end. In im- 

 mature males the center line is blacker. 



Measurements. — Males (10 from Veraguas, Herrera, and Code), 

 wing 64.0-67.8 (66.0), tail 33.7-36.3 (34.5), culmen from base 

 25.2-28.3 (25.9) mm. 



Females (4 from Veraguas and Herrera) , wing 64.4-65.2 (64.8) , 

 tail 33.4-35.7 (34.8), culmen from base 27.0-30.0 (28.1) mm. 



Resident. Found locally in small number in the Pacific lowlands 

 from Chiriqui through southern Veraguas to Herrera and southern 

 Code; 2 records for the Caribbean side of the Canal Zone (Gatun). 



This is a species of the pasturelands and stream borders where 

 brush and low trees offer some measure of cover, but where the 

 terrain is open, not forested. The bird is rather uncommon in Herrera, 

 where in 1948 I secured specimens near Santa Maria, Parita, Paris, 

 El Rincon, and Pese, and saw others in open pasturelands near 

 Potuga. I found them among scattered low trees and bushes where 

 they were feeding at flowers. To rest they chose perches where 

 there was an open view, from near the ground to an elevation of 

 10 meters. 



Nothing is known to me of its nesting. 



The specific name of this little-known bird was included by Reichen- 

 bach in his Trochilinariim Enumeratio in 1855 based on manuscript 

 notes of Gould, who did not publish his plate and description in his 

 Monograph of the Trochilidae until May 1858. The name thus dates 

 from the first reference in Reichenbach. Gould, on page 76 of his 

 work, writes that he "received both drawings and specimens from 

 M. Warszewicz, the celebrated South American traveller and botanist. 

 The specimens referred to were collected near the volcano of Chiriqui 

 in Veragua." P. L. Sclater (Proc. Zool. Soc. London, 1856, p. 138) 

 wrote that this "well-known Polish collector was resident in David, 

 Chiriqui sometime in 1849." This hummingbird was recorded by 

 Sclater (he. cit., p. 140) as taken by Bridges "in the outskirts of 



