590 BIRDS OF THE REPUBLIC OF PANAMA PART 4 



specimens he and Boulton collected in 1924 at Cerro Flores, eastern 

 Chiriqui, between 1080 and 1200 m. In 1926, R. R. Benson collected 

 a series at Chitra, Veraguas, between 900 and 1080 m, that was also 

 assigned to this race. Specimens taken in the 19th century by Arce 

 at Calovevora and Castillo, Veraguas, now in the British Museum, 

 prompted Salvin and Godman (Biol. Centr.-Amer., Aves, vol. 1, pt. 28, 

 1884, p. 321) to write, "The normal colouring of the throat in this 

 species is pale yellow; but specimens occur in which the throat is rich 

 orange. We have several such specimens from the state of Panama." 

 The American Museum specimens with which Griscom compared 

 coloratus were all older and made up so that the throat is less visible. 

 In addition, part of the orangeness on the throat of some of the speci- 

 mens is due to blood stains. A bird taken by Heyde and Lux March 

 3, 1889, at Cascajal, Code — farther eastward in Panama than the range 

 has previously been indicated in the literature — -is not distinguishable 

 from a large series of A. a. brunnescens of western Chiriqui. It is best, 

 therefore, not to recognize the race coloratus. 



On March 22, 1954, at El Volcan I saw half a dozen of these birds 

 in low undergrowth at the edge of forest at 1560 m on Silla de Cerro 

 Pando. There was evidently some mating activity among them that had 

 brought them into view, as we had seen none before. While they were 

 pursuing one another among the bushes, at any movement or alarm they 

 took to cover precipitously. Blake (Condor, 1956, p. 388) describes a 

 nest collected April 11, 1932, on Volcan de Chiriqui as "made entirely 

 of grass and straw-like materials, finest in the lining, and measures 

 5x4x2^ inches. Its cup is shallow and ill-defined. This nest, unlike 

 others of the species that have been described, was built on the ground. 

 The two immaculate white eggs are slightly glossy and were faintly 

 tinged with blue when found. Measurements: 23.5x16.3 and 23 X 

 16.5 mm." 



ATLAPETES ALBINUNCHA AZUERENSIS Aldrich 



Atlapetes gutturalis azuerensis Aldrich, 1937, Sci. Publ. Cleveland Mus. Nat. Hist., 

 7, p. 138. (Cerro Viejo, 3,000 ft., between headwaters of Rios Negro and 

 Mariato, 18 mi. east of Monti jo Bay, Veraguas, Panama.) 



Characters. — Back dark brown, not blackish gray; remiges blackish, 

 edged reddish brown; gray band across breast; flanks and undertail 

 coverts reddish brown, not grayish brown. 



Measurements. — Males (3 from Veraguas), wing 71.0-77.5 (74.8), 

 tail 75.5-83.6 (80.4), oilmen from base 15.0-16.1 (15.4), tarsus 25.4- 

 26.9 (26.1) mm. 



