22 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



Nicaragua. The nest "was in a small, natural cavity at the foot of a 

 tree level with, if not below, the ground. The eggs, two in number 

 were pure white. Notwithstanding the fact that the eggs were 

 somewhat incubated the bird was engaged in carrying tufts of fine 

 roots to the nest at the time of its discovery." One of the eggs in 

 form is short subelliptical ; the other, somewhat broader, is almost 

 short oval. Both show only faint gloss. They measure as follows : 

 18.2x15.3, 19.1x15.7 mm. (The population of this species from 

 the Rio Escondido is intermediate between G. s. suhlestus and G. s. 

 pectoralis but nearer the latter.) 



Schonwetter (Handb. Ool.. pt. 14, 1967, p. 16) records the size in 

 a set of two eggs in the British Museum (Natural History) as 

 19.6x12.7 and 20.3x12.7 mm. While the editor, Dr. Meise, has 

 listed them under the name suhlestus he cites the range as "Costa 

 Rica bis W. Ecuador u. W. Venezuela" so that the subspecies from 

 this reference is not certain. Skutch (Pac. Coast Avif. no. 35, 1969, 

 pp. 393-394) noted that the male and female share in incubation and 

 in the care of the young. Often as they changed in covering the eggs, 

 they brought small bits of material to add to the nest lining. The 

 young at hatching have long, dark gray down. 



GLYPHORYNCHUS SPIRURUS PALLIDULUS Wetmore 



Glyphorynchus [sic] spirurns paUididus Wetmore, Proc. Biol. Soc. Washington, 

 vol. 82, February S, 1970, p. 770. (Charco del Toro, Rio Maje, eastern 

 Province of Panama, Panama. ) 



Characters. — Similar in size to G. s. suhlestus but paler in color; 

 more grayish olive on lower surface, with the back lighter, less 

 reddish brown, and the rump, tail, and wings more rufous-brown. 



Measurements. — Males (17 from eastern provinces of Panama 

 and Colon, Darien, and San Bias), wing 71.7-75.5 (73.9), tail 62.8- 

 69.9 (66.6), culmen from base 12.3-14.2 (13.0), tarsus 16.5-17.8 

 (17.2) mm. 



Females (20 from eastern Province of Panama, Darien, and San 

 Bias), wing 64.6-73.8 (69.5). tail 59.0-68.0 (62.6), culmen from 

 base 12.2-13.5 (12.9), tarsus 16.0-17.7 (16.7) mm. 



Resident. On the Pacific slope through the eastern Province of 

 Panama including the Cerro Azul and the upper Chagres Valley, to 

 the Chucunaque-Tuira Valley and Cerro Pirre and Cerro Tacarcuna ; 

 on the Caribbean side from southeastern Colon in the middle Chagres 

 Valley (head of the Rio Frijolito) east to near the Colombian 

 boundary in San Bias ( Armila, Puerto Obaldia). 



