430 Annals of the Carnegie Museum. 



not found, however, among the cacti and thorny scrub of this section, 

 but among the green trees and shrubbery along the banks of the 

 streams and irrigation ditches. The birds usually go in pairs, and 

 are inclined to be very quiet, climbing about among the branches and 

 making short flights and hops. The song is very sweet, but is seldom 

 heard. 



391. Pachysylvia aurantiifrons aurantiifrons (Lawrence). 

 Hylophilus hypoxanthus (not of von Pelzeln) Salvin and Godman, Ibis, 1880, 



118 (Valencia). 

 Hylophilus aurantiifrons Bangs, Proc. Biol. Soc. Washington, XII, 1898, 142 



("Santa Marta"). — Allen, Bull. Am. Mus. Nat. Hist., XIII, 1900, 172 



(Bonda ; crit.'). 

 Pachysylvia aurantiifrons aurantiifrons Ridgway, Bull. U. S. Nat. Mus., No. 



50, III, 1904, 220 ("Santa Marta"; references). — Hellmayr, Nov. Zool., 



XIII, 1906, 12 ("Santa Marta"; in range). — Hellmayr and von Seilern, 



Arch. f. Naturg., LXXVIII, 1912, 49, in text ("Santa Marta"; crit.). 



Thirty-eight specimens : Bonda, Don Diego, Dibulla, Fundacion, 

 Minca, Mamatoco, La Tigrera, Tucurinca, and Valencia. 



This Pachysylvia is strictly confined to the Tropical Zone, ranging 

 from sea-level up to 2,500 feet, but seems more abundant at the lower 

 levels. It was more numerous at Don Diego than at any other point, 

 but strange to say was found only on the plantation grounds, among 

 the rubber, cocoa, and other trees, none at all being seen in the forest. 

 In other localities it was found in open woodland, and along road- 

 sides, the banks of streams, etc. It is usually met with in pairs, and 

 is very quiet and inconspicuous as it climbs about the branches in 

 search of its insect food, sometimes sallying forth in a short flight and 

 seizing them with a snap, in true vireo style. 



392. Pachysylvia flavipes flavipes (Lafresnaye). 



Hylophilus flavipes Bangs, Proc. Biol. Soc. Washington, XII, 1898. 142 (" Santa 

 Marta"). — Allen, Bull. Am. Mus. Nat. Hist., XIII, 1900, 172 (Bonda; 

 crit.). 



Twenty-three specimens: Bonda, Mamatoco, Dibulla, La Tigrera, 

 Fundacion, Rio Hacha, Santa Marta, and Valencia. 



There is some difference between specimens taken early in Septem- 

 ber and those taken the latter half of April, spring birds being much 

 less buffy below and less greenish, more grayish above, while the feet 

 are also darker colored. October and November birds are inter- 



