PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM, 385 
Vol. Vi, No. 25. Washington, D. ©. April 9, 1884. 
Upon a bare twig which overhung the trail at a distance of about 
four feet from the ground, two male “Bailadors” were engaged in a 
“song and dance” act that simply astounded me. The two birds were 
about a foot and a half apart, and were alternately jumping about two 
feet into the air and alighting exactly upon the spot whence they 
jumped. The time was as regular as clock-work, one bird jumping up 
the instant the other alighted, each bird accompanying himself to the 
tune of ‘“ to-lé-do—to-lé-do—to-lé-do,” sounding the syllable “to” as he 
crouched to spring, “/é” while in the air, and “do” as he alighted. 
This performance was kept up without intermission for more than a 
minute, when the birds suddenly discovered that they had an audience, 
and made off. 
With a little practice one can learn to call the birds very readily. I 
could have secured a very large number in this manner, had I been so 
disposed. 
Twelve specimens. 
Fam. COTINGIDA. 
*35. Pachyrhamphus cinereiventris Scl. 
Not common. Iris brown. Found in deep woods. Silent. Two 
specimens. 
*36. Attila citreopygia (Bp.). 
Rather common. Iris pink. Two specimens. 
Fam. DENDROCOLAPTIDA. 
*37. Sittasomus olivaceus (Max.). 
Abundant. Silent. Foundin deep woods. Two specimens. 
*38. Dendrocincla homochroa Scl. 
Abundant. All birds of this family that I have collected habitually 
climb like woodpeckers, but do not seem to tap with their bills. Three 
specimens. 
39. Dendrocolaptes sancti-thome (Lafr.). 
Rare. Only one specimen shot, and that was engaged in eating ants 
in company with a flock of Hucometis spodocephala. 
*40. Dendrornis eburneirostris (Less.). 
Abundant. Habits like preceding. Three specimens. 
Fam. FORMICARIID A. 
41. Thamnophilus doliatus (Linn.). 
Abundant. Iris white. Habits wren-like. This bird has a chatter- 
ing note almost exactly like that of Trogon melanocephalus, which has 
often misled me. It also has a scolding note precisely like many of the 
wrens. The female seems to be shyer and more retiring in her manner 
than the male. The nest is often placed in a brush heap, or, rather, in 
Proc. Nat. Mus. 83——25 
