l82 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



large end." The male was incubating when the nest was first found. 

 The newly hatched young were without down. 



The male type came to George N. Lawrence from McLeannan, 

 stationmaster at Lion Hill on the Panama Railroad, so that the type 

 locality is accepted as that point. In the original description Lawrence 

 noted "feathers on the sides of the breast marked along their shafts 

 with a narrow stripe of white, which reaches nearly to their ends — 

 these marks being only apparent on raising the feathers." This pat- 

 tern is not universal but is present in occasional specimens, usually 

 as narrow lines on the feather shafts. 



MICRORHOPIAS QUIXENSIS CONSOBRINA (Sclater) 



Formicivora consobrina P. L. Sclater, Proc. Zool. Soc. London, pt. 28, August 

 1860, p. 279. (Babahoyo, Ecuador.) 



Characters. — White tip on outer rectrices 9-12 mm long; male 

 with flanks slate-black to black ; female with under surface decidedly 

 darker, deep chestnut. 



A male taken at Armila, San Bias, February 26, 1963, had the iris 

 dark brown. The colors of bill and feet in general were those of the 

 race virgata. 



Measitrcments. — Males (10 from Darien and San Bias), wing 

 48.0-52.0 (49.6), tail 42.7-46.9 (45.0), culmen from base 13.8-15.6 

 (14.9), tarsus 15.1-16.0 (15.5) mm. 



Females (10 from Darien and San Bias), wing 46.5-50.0 (48.1), 

 tail 42.5-47.0 (45.4), culmen from base 13.6-15.2 (14.6, average 

 of 9), tarsus 15.2-15.9 (15.5) mm. 



Resident. Common in lowland forests through Darien, and in 

 eastern San Bias to the Colombian boundary; to 550-575 meters on 

 Cerro Pirre and Cerro Tacarcuna. 



On the whole the birds of this race are less common than those of 

 the form of central and western Panama. Bangs and Barbour (Bull. 

 Mus. Comp. Zool., vol. 65, 1922, p. 207) reported them from Cerro 

 Sapo and the lowlands eastward to Jesucito. There is a male in the 

 U.S. National Museum collected by the botanist R. S. Williams at 

 Cana on Cerro Pirre in April 1908. and another taken there by 

 Goldman in June 1912. Griscom (Bull. Mus. Comp. Zool., vol. 69, 

 1929, p. 168) received a male and three females, taken near Cana by 

 Benson in 1928. In work in the Tuira Valley I found them distributed 

 widely from El Real along the Chucunaque and Tuira Rivers to the 

 base of Cerro Tacarcuna at the old village site on the Rio Tacarcuna. 

 They were common at Jaque and on the lower Rio Jaque, near the 



