_=Chaetura leucopygialis=_ (Blyth): White-rumped Spine-tailed Swift.--_Specimens_, 12: Cocoa Research Station: [Female] well-developed brood patch, June 28, 1962, MCT 2565; [Female], 12.9 gm., June 30, 1962, MCT 2567; [Female], June 30, 1962, heavy molt on body, head, wing, tail, MCT 2568; [Female], 14.5 gm., June 30, 1962, MCT 2569; [Female], 13.0 gm., June 30, 1962, MCT 2571; [Female], 13.0 gm., July 1, 1962, MCT 2572; [Male] testis 4 x 2 mm., 12.3 gm., July 1, 1962, MCT 2575; [Male] testis 2 x 1 mm., 14.9 gm., July 2, 1962, MCT 2576; [Female], 15.4 gm., July 5, 1962, MCT 2595; [Male] testis 2 x 1 mm., 15.4 gm., wing molt, July 5, 1962, MCT 2596; [Male] testis 2 x 1 mm., 11.9 gm., July 6, 1962, MCT 2598; [Female], 13.0 gm., July 6, 1962, MCT 2599. This species was common around the Cocoa Research Station but was not seen elsewhere. There is some variation in color within the populations. _=Hemiprocne comata comata=_ (Temminck): White-whiskered Tree Swift.--_Specimens_, 3: Cocoa Research Station: [Male] testis 2 x 1 mm., 17.0 gm., July 28, 1962, MCT 2675; sex?, young in juvenal plumage, MCT 2812; [Male], April 28, 1963, ADG 76. At the Cocoa Research Station this common bird usually was seen sitting on a dead branch of a shade tree in the cocoa whence it would dart out after insects. It rarely perched higher than 12 feet. Occasionally it was seen in a clearing in the primary forest. _=Hemiprocne longipennis longipennis=_ (Rafinesque): Crested Tree Swift.--_Specimens_, 2: Cocoa Research Station: [Male] testis 4 x 3 mm., September 4, 1962, MCT 2866; sex?, 42.8 gm., September 8, 1962, MCT 2888. These swifts also were common at the Cocoa Research Station. Unlike _H. comata_, these birds flew high and sat far up in trees while resting. I never observed them in the primary forest. The two specimens were more greenish-blue dorsally than typical _H. l. longipennis_. Specimens from Java were paler gray ventrally and their tertials were more nearly white. Too few specimens were available to permit determination of the constancy of the mentioned variation and the two from the station are referred to the nominate subspecies until more material becomes available. _=Harpactes diardi diardi=_ (Temminck): Diard's Trogon.--_Specimens_, 8: Cocoa Research Station: [Female], 95.9 gm., July 2, 1962, MCT 2579; 3 alcoholic naked young, July 3, 1962, presumed young of 2579, MCT 2581-83; [Female], 95.0 gm., August 20, 1962, MCT 2782; [Male] testis 6 x 3 mm., September 5, 1962, MCT 2870; [Male], September 5, 1962, MCT 2871; [Male], December 1, 1962, MCT 3409.