158 Bangs — Birds from I'm bio Viejo, Colombia. 



Aulacorhamphus calorhynchus Gould. 



Four males. All have larger bills than the one female I refolded in 

 my last paper* from Santa Marta, the type locality of the species. The 

 difference is doubtless sexual. 



Anthocephala floriceps (Gould). 



One fine adult male, taken Mar. 20, 1898, is, so far as I know, the only 

 specimen of this extremely rare hummer in this country. 



Hemiprocne zonaris (Shaw). 



One adult male, taken at Santa Marta, Colombia, Feb. 18, 1898. Not 

 quite typical. Wing, 193; tail, 72; length (skin), 198; about the size of 

 H. zonaris albicincta (Cab.), but the white collar is wider instead of nar- 

 rower on the upper side. 



Mionectes olivaceus Lawr. 

 Two males, taken Mar. 20, 1898. 



Elaenia browni so. nov. 



Type (and only specimen), from Pueblo Viejo, Colombia. No. 5573, 

 r? adult, coll. of E. A. and O. Bangs. Collected Mar. 23, 1898, by W. W. 

 Brown, Jr. Altitude 8000 ft. 



Specific characters. — Nearest E. mesoleuca Cab. & Heine, of Brazil, but 

 smaller; olive green of upper parts browner (darker); axillaries, under 

 wing-coverts, sides of body, and under tail-coverts less yellow; throat 

 pale yellowish green, instead of grayish white. 



Size. — rj adult: wing, 72.2; tail, G4.4; exposed culmen, 10. 



Myiodynastes chiysocephalus (Tschudi). 

 One female, March 21, 1898. 



Myiobius nasvius (Bodd.). 

 One male, Mar. 21, 1898. The crest is red. 



Myiarchus nigriceps Scl. 

 Two specimens, male and female. 



Tityra semifasciata (Spiz). 

 Two specimens, male and female. 



Automolus rufipectus sp. nov. 



Type (and only specimen), from Pueblo Viejo, Colombia. No. 5580, 

 cf adult, coll. of E. A. and O. Pangs. Collected Mar. 21, 1898, by W. W. 

 Brown, Jr. Altitude 8000 feet. 



*Proc. Biol. Sue. Wash., XII, p. 134, June 3, 1898. 



