378 Annals of the Carnegie Museum. 



Thirty-five specimens : Bonda, Cacagualito, Mamatoco, La Tigrera, 

 Fundacion, Tucurinca, Santa Marta, and Arroya de Arenas. 



In originally describing this form it was compared with specimens 

 from Venezuela and Trinidad, supposed (on the authority of Mr. 

 Hellmayr) to be typical. A series of fresh specimens from Bahia, 

 Brazil (the type-locality), however, shows that these more northern 

 birds are by no means typical, and probably constitute a recognizable 

 race. Hence the diagnosis of aurulentus will have to be modified 

 somewhat. Above it is slightly brighter, more yellowish green than 

 flaviventris, but this difference is inconsequential. Below it is ob- 

 viously paler, purer, and more uniform yellow, the sides and flanks 

 with scarcely any greenish tinge, and the throat and breast with much 

 less gamboge yellow shading. These differences are well marked when 

 series are compared. With the other described forms it requires no 

 comparison, since these are said to differ in having greenish instead 

 of yellowish wing-coverts, and in other particulars. The range of 

 the new form is of course not confined to the Santa Marta region, but 

 extends to the westward in the littoral area. 



An inhabitant of the semi-arid lowlands and lower foothills, up to 

 1,500 feet at least. It was accordingly not found in the humid forests 

 about Don Diego and Dibulla, but is common in the vicinity of 'Fun- 

 dacion, in the drier foothills. It prefers open woodland and shrub- 

 bery, and is always seen near the ground. 



Mr. Smith sent in no less than nineteen nests of this species, all 

 from Bonda, and taken at dates ranging from April 22 to June 6. 

 The majority had two eggs each, but several had three. 



"The nest is retort-shaped, hung apparently from the end of a 

 slender, drooping branch, with the entrance at the bottom. It is com- 

 pactly woven of soft flexible fibers of dead grass, coarse at the top 

 and superficially but, for the most part, very fine and soft, in some 

 nests almost as fine and soft as tow. The entrance forms a short 

 neck at the bottom on one side, through which the bird passes upward 

 to the nest proper, which occupies the bulbous portion of the bottom. 

 The nest is supported and fastened to the branch by quite a long, 

 slender, tapering neck. The nests vary in vertical length from about 

 six inches to a foot, according to the length of the neck, with a dia- 

 meter across the bulbous portion, near the bottom, of about four to 

 six inches. 



