Il8 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



Station, eastern Province of Panama, February 20, 1961, had the iris 

 dark wood brown ; maxilla black, tip of mandible dusky neutral gray, 

 base brownish white ; tarsus and toes fuscous, claws black. 



Measurements. — Males (10 from Darien, San Bias, and Ecuador), 

 wing 84.0-89.1 (86.8), tail 56.2-62.4 (59.8), culmen from base 22.6- 

 24.8 (23.7), tarsus 21.3-22.9 (22.4) mm. 



Females ( 10 from eastern Province of Panama, Darien, and 

 Ecuador), wing 82.7-90.2 (85.6). tail 53.0-64.2 (58.2), culmen from 

 base 22.0-24.8 (23.6). tarsus 21.8-23.0 (22.6) mm. 



Resident. Uncommon in heavy forest ; on Pacific slope in Darien, 

 to 550 meters on Cerro Pirre and 575 meters on the Rio Tacarcuna; 

 on the Caribbean slope from the upper Chagres Valley to eastern San 

 Bias (Puerto Obaldia). 



This darker race is slightly more common than the nominate sub- 

 species. On Cerro Pirre I saw them occasionally in the forest and 

 several were taken in the mist nets. At Boca de Paya I found two 

 feeding together on the ground, throwing leaves in the usual active 

 manner. Occasionally they uttered a low, rather plaintive call. The 

 single bird that I secured on the Rio Pequeni, above Madden Lake, 

 is especially dark colored. In the undergrowth in tall forest they range 

 on or near the ground in such dark shadow that often they were seen 

 with difficulty. 



Beyond Darien this race ranges south in western Colombia to 

 northwestern Ecuador. 



LOCHMIAS NEMATURA NELSONI Aldrich: Sharp-tailed Creeper, 



Macuquino 



Lochmias nematura nelsoni Aldrich, Auk, vol. 62, no. 1, January 29, 1945, p. 113. 

 (Cerro Pirre, 1220 meters, Head of Rio Limon, Darien, Panama.) 



In form like a short-tailed wren ; deep blackish brown, with the 

 under surface spotted with white. 



Description. — Adult (sexes alike), crown dull blackish brown; 

 back, rump, scapulars and outer webs of secondaries blackish chest- 

 nut-brown ; upper tail coverts dusky-black ; tail blackish slate ; pri- 

 maries and wing coverts dusky with the outer webs blackish chestnut- 

 brown ; side of head dusky-black, with faint shaft lines of dull white ; 

 under surface dusky-brown with guttate spots of dull white that al- 

 most coalesce on the chin, and on lower flanks and under tail coverts 

 change to dull buffy brown ; under wing coverts dusky, spotted faintly 

 with dull white. 



Measurements. — Males (4 specimens), wing 66.5-70.2 (67.9), 



