92 Zoological N. Y. Zoological Society. [I; 3 



hibited considerable variation, some birds, doubtless immature, 

 showing a much greater amount of brown on the plumage than 

 others. 



A female which I secured had several hundred very small 

 ants in its stomach. 



Campephilus melanoleucus (Gmel.). Great Red-crested 

 Woodpecker. 



Occasionally seen in pairs in the dense woods west of 

 Guanoco. A male which I secured on April 13th had been feed- 

 ing upon small iridescent green bees, which he had been chisel- 

 ing out from a half-dead tree trunk. 



Ceophloeus lineatus (Linn.). Great Ivory-billed Woodpecker. 



A pair of these splendid woodpeckers seemed perfectly at 

 home among the Indian huts at Gaiio Colorado, calling from the 

 nearest trees and flying to and fro overhead. 



Another pair had a nest in a hole high up in the trunk of an 

 unclimbable tree near our house at Guanoco. Their calling and 

 drumming was one of the dominant sounds in early morning. 



Order PASSERIFORMES. 



Family FORMIC ARIWAE. 



Thamnophilus doliatus doliatus (Linn.). Checked Antbird. 



This interesting ant-thrush was not uncommon along the 

 railroad track, appearing usually in pairs and uttering a loud, 

 drawn-out call. The sexes, as is often the case in this family of 

 birds, are radically different in color, the male black, thickly 

 barred and spotted with white, while the female is of a general 

 rufous color. These ant-thrushes feed on insects which they find 

 on the ground, often scratching for them among fallen leaves. 



Thamnophilus canadensis trinitatis (Ridgw.). Trinidad 

 Black-headed Antbird. 



The black-headed males and the rufous-capped females of 

 this species of ant-thrush were fairly common in the undergrowth 

 about the border of the lake of La Brea. They seldom left the 

 shelter of the low bushes, except to descend to the ground now 

 and then for an insect. All I secured were feeding on a small, 

 green species of hemipter. A motion characteristic of these 

 birds was to flirt the tail sharply and raise the crest, uttering 

 at the same time a simple chirp. 



