232 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



antbird roosted in the same tree on many evenings each month, and 

 for about 84 per cent of these evenings it was on the same branch." 



HYLOPHYLAX NAEVIOIDES NAEVIOIDES (Lafresnaye) 



Conopophaga naevioides Lafresnaye, Rev. Zool., vol. 10, March 1847, p. 69. 

 (Near Panama City, Panama.) 



Characters. — Back somewhat Hghter brown ; sides and flanks paler 

 gray; subterminal black tip on tail slightly wider, with brown tip 

 averaging lighter, more buf¥ ; female more bufTy on the under surface, 

 especially on the breast and flanks; averaging slightly smaller. 



A male taken on Cerro Campana, Panama, March 5, 1951, had the 

 iris very dark brown ; bill black ; tarsus, toes, and claws neutral gray. 

 Another, collected at Cafiita, Panama, February 6, 1962, had the iris 

 dark reddish brown, but otherwise was similar. 



A female taken with the male on Cerro Campana, had the iris, 

 tarsus, and toes similar to the male, but with the maxilla dull slaty 

 black and the mandible neutral gray. In another collected with the 

 male at Cafiita, the iris was dark wood brown; the maxilla and the 

 extreme tip of the mandible black, and the rest of the mandible pale 

 neutral gray ; tarsus, toes, and claws as in the male. 



Measurements. — Males (10 from Province of Panama, Canal 

 Zone, Darien, and San Bias), wing 61.0-65.7 (63.0), tail 33.4-37.6 

 (35.1), culmen from base 16.9-18.7 (17.4), tarsus 21.9-22.9 

 (22.3) mm. 



Females (10 from Province of Panama, Canal Zone, and Darien), 

 wing 60.0-63.8 (61.6), tail 31.7-34.9 (33.6), culmen from base 

 16.2-17.4 (16.9), tarsus 21.2-23.1 (22.3) mm. 



An adult male collected near Gamboa, Canal Zone, August 8, 1968, 

 by R. S. Crossin weighed 18.0 grams. G. Child at Santa Fe, Darien, 

 March 30, 1963, recorded weights of a male as 14.9 and of two 

 females as 15.7 and 13.3 grams. 



Resident. Locally common, on the Pacific slope in forested areas 

 in the Tropical Zone, from Cerro Campana, western Province of 

 Panama, and on the Caribbean side from western Colon to the 

 Colombian boundary in Darien and San Bias ; to 850 meters on Cerro 

 Campana, 575 meters on Cerro Tacarcuna. 



Reproduction in this species is reported as follows. Johnson 

 (Proc. Linn. Soc. New York, no. 63-65, March 1954, p. 56) recorded 

 display in late March in which the "male lowers the head and flattens 

 the back by spreading the shoulders and the tail slightly to expose the 

 white spots in the back and wings." Stone (Proc. Acad. Nat. Sci. 



