FAMILY TROCHILIDAE 339 



collected by H. J. Watson is labeled "Bogava, Chiriqui, 800 feet." 

 The label is that of the dealer Rosenberg, though the writing is that 

 of Watson. As the locality is in the hot lowlands, far distant from the 

 usual range in mountain forests, the record is open to question. 



Most of the specimens that are known have been taken in western 

 Chiriqui from the slopes of the great volcano, and the Cerro Pan do 

 adjacent. I have found them feeding at flowers near the ground, where 

 they impressed me by their active movements. They range in forest, 

 but on the higher slopes may come out into more open localities when 

 attracted by plants in blossom. In the original description the locality 

 "Castello" for one of the specimens should have read Castillo. As 

 Arce secured 1 at Calovevora, northern Varaguas, and Galindo col- 

 lected 1 on the upper Rio Changuena in the mountains of Bocas del 

 Toro it is probable that these birds range along the higher ridges of the 

 Caribbean slope as well as on the Pacific side. 



The race egregia extends through the mountains of Costa Rica 

 where Slud (Bull. Amer. Mus. Nat. Hist., vol. 128, 1964, p. 157) 

 reports it mainly from the Caribbean drainage. Typical E. e. eximia, 

 found from Nicaragua north to Chiapas, differs in slightly smaller 

 size. In addition, the outer rectrix in the male has the outer web com- 

 pletely black, and in the female is broadly tipped with black. 



EUPHERUSA NIGRIVENTRIS Lawrence: Black-bellied 

 Hummingbird, Colibri de Barriga Negra 



Eupherusa nigriventris Lawrence, Proc. Acad. Nat. Sci. Philadelphia, 1867 

 (1868), p. 232. (Costa Rica.) 



Small ; outer tail feathers white ; partly concealed bright brown spot 

 on the secondaries ; male black below. 



Description. — Length 70-80 mm. Adult male, above from the 

 occiput to the rump, including the lesser and middle wing coverts, 

 bronze-green ; feathers of crown edged narrowly with dull black ; 

 upper tail coverts dull bronze ; middle rectrices dull black glossed with 

 bronze ; outer pairs white ; wings dusky, with a purplish bronze re- 

 flection; secondaries basally cinnamon-brown, with the tips more or 

 less dusky, forming a partly concealed spot; forecrown, forehead, 

 sides of head, and under parts black; sides and under wing coverts 

 bronze-green ; edge of wing cinnamon-brown ; under tail coverts white. 



Adult female, above metallic bronze-green ; upper tail coverts more 

 definitely bronze ; wings as in male, but with cinnamon spot on the 

 secondaries less evident; foreneck, breast, and abdomen grayish 

 white ; under tail coverts white. 



