5l6 BIRDS OF THE REPUBLIC OF PANAMA — PART 3 



nest as similar to that of the OHvaceous Flatbill but much bulkier, 

 made of coarser materials. Those recorded have been placed from 2^ 

 to nearly 11 meters above the ground. The nest is a rounded, 

 elongated mass of fibrous materials, mixed with many dead leaves, 

 that hangs free from the tip of a branch or vine. The rounded inner 

 chamber has a tubular entrance projecting below the bottom. As eggs 

 were seen only by means of a mirror, none were measured. A frag- 

 ment of shell that had fallen outside was "pale reddish brown, 

 mottled with a dark shade of reddish brown in a wreath around the 

 thick end." The young at hatching had pink skins and "sparse but 

 rather long, gray down." Empty nests are used as sleeping quarters, 

 and outside the nesting season others are built especially for that 

 purpose. These often are less substantial, with the entrance spout 

 shorter or absent. 



RHYNCHOCYCLUS BREVIROSTRIS HELLMAYRI Griscom 



Rhynchocychis brevirostris hellmayri Griscom, Bull. Mus. Comp. Zool., vol. 72, 

 January 1932, p. 352. (Cana, Darien.) 



Characters. — Darker both above and below. Darker olive-green 

 above ; breast and f oreneck darker ; abdomen somewhat duller yellow. 



Measurements. — Males (3 from Darien), wing 79.1-87.0 (82.8), 

 tail 64.0-73.2 (69.2), culmen from base 16.0-17.0 (16.5), tarsus 

 18.2-19.0 (18.6) mm. 



Females (8 from Darien), wing 75.0-78.5 (76.8), tail 62.2-65.9 

 (62.5), culmen from base 15.7-17.6 (16.7), tarsus 18.2-19.1 (18.6) 

 mm. 



Resident. Recorded on the Pacific slope in Darien, from Cerro 

 Pirre, Cerro Mali, the upper Rio Jaque, and Cerro Nique. (Found 

 also on the east face of Cerro Tacarcuna in the drainage of the Rio 

 Cuti, in Choco, Colombia. ) 



The first specimens of this race were two females collected by E.A. 

 Goldman, May 3 and 5, 1912, at 1370 and 1525 meters elevation, near 

 the head of Rio Limon, on Cerro Pirre. R. R. Benson in 1928, 

 collecting for the Museum of Comparative Zoology, took two males 

 and four females in that area, these subsequently forming the series 

 from which Griscom described the race. The bird was recorded 

 again on this mountain through a male secured August 10, 1965, in 

 a collection made by Dr. Pedro Galindo for the Gorgas Memorial 

 Laboratory. He secured others on June 9, 1963, on Cerro Mali, and 

 March 18. 1972, at 700 meters on Cerro Nique. 



On April 7. 1947, on the upper Rio Jaque, Darien, I collected a 



