FAMILY TROGLODYTIDAE 



75 



1964, op. cit.), continuing to southeastern Nicaragua, at Los Sabalos 

 where the river of that name joins the Rio San Juan, at San Juan del 

 Norte (formerly Greytown) at the mouth of this river. 



The eggs of T. m. zeledoni have not as yet been described. A nest 

 collected at Almirante June 4, 1962, by Pedro Galindo is an elliptical 

 ball of long slender plant fibers (apparently aerial rootlets, mixed with 

 fine grass stems and a lesser amount of broad-bladed grass) measuring 

 120 X 160 mm. The entrance hole in the end was underneath so that it 

 was sheltered. Another nest, slightly smaller, with dimensions HOx 

 120 mm, found on the same date, was more loosely compacted of 

 shorter, coarser materials, including rootlets and grass. It also had the 

 entrance hole sheltered beneath, at one end. Both nests were empty. 



THRYOTHORUS MODESTUS ELUTUS (Bangs) 



Thryophilus modestus elutus Bangs, Proc. New England Zool. Club, vol. 3, Janu- 

 ary 30, 1902, p. 51. (Lion Hill Station, Panama Railroad, Canal Zone.) 



Characters. — Smaller; rump and upper tail coverts russet, tail dull 

 russet; upper abdomen and tibia white, changing to gray on upper sides; 

 lower sides, flanks, and undertail coverts buffy cinnamon. 



A male at El Cope, Code, February 24, 1962, had the iris reddish 

 brown; maxilla black; nasal operculum mandible, tarsus, toes, and 

 claws dark neutral gray. Posterior area of the inside of the mouth, in- 

 cluding the thickened base of the tongue, black, shading anteriorly to 

 neutral gray on inner surface of bill. The slender tip of the tongue was 

 transparent, without color. In another male, at Puerto Armuelles, 

 Chiriqui, March 10, 1966, the iris was orange-brown; tip of mandible 

 dark neutral gray; cutting edge of maxilla and base of mandible light 

 neutral gray; rest of maxilla black; tarsus, toes, and claws dusky neutral 

 gray. 



Measurements. — Males (10 from Chiriqui, Veraguas, Los Santos, 

 Herrera, Code, and Canal Zone), wing 58.1-60.9 (59.2), tail 45.6- 

 51.2 (48.2), culmen from base 18.1-18.9 (18.1), tarsus 23.0-24.8 

 (23.8) mm. 



Females (10 from Chiriqui, Veraguas, Los Santos, Code, and Canal 

 Zone), wing 53.4-56.7 (55.2), tail 42.0-49.5 (44.2), culmen from base 

 17.1-18.9 (18.1), tarsus 21.6-23.0 (22.6) mm. 



Resident. Common in the Tropical Zone of the Pacific slope; from 

 western Chiriqui (to over 1500 m above El Volcan including Cerro 

 Punta; above Boquete) and the Burica Peninsula at Puerto Armuelles, 

 east through southern Veraguas, the Azuero Peninsula to Punta Mala, 



