FAMILY TROGLODYTIDAE 



67 



dark hair brown, streaked narrowly, especially on the crown, with 

 whitish, the markings darker laterally, changing to blackish; back dull 

 black, streaked with white; scapulars, lower back and upper tail coverts 

 light brown, barred with black; rump more rufescent; tail dull black, 

 tipped indistinctly with brownish white, barred on outer webs with 

 brown; wings dusky, with outer webs barred with light brown, except 

 at tips; sides of head brownish white, streaked lightly and narrowly 

 with dull black; a narrow superciliary line dull white; throat, upper 

 foreneck, lower breast and upper abdomen white; sides, flanks, tibia, 

 and undertail coverts light brown; underwing coverts white. 



Adult female, back duller black; light markings of crown and back 

 reduced in extent. 



Immature, above browner without pale markings on upper surface, 

 or, if present, much reduced. 



Iris yellow; bill brown to blackish, sometimes yellow or whitish be- 

 low; tarsi yellow to whitish or brown (labels on 7 Chiriqui specimens 

 in the American Museum of Natural History) . 



Measurements. — Males (10 from Chiriqui and Costa Rica), wing 

 43.2-50.0 (45.7), tail 36.7-46.7 (45.7, average of 8), culmen from base 

 12.0-13.0 (12.5), tarsus 16.6-18.7 (17.6) mm. 



Females (10 from Chiriqui and Costa Rica), wing 43.5-46.0 (44.6), 

 tail 36.4-45.0 (39.5), culmen from base 11.3-13.6 (12.8), tarsus 17.3- 

 19.4 (17.9) mm. 



Resident. Recorded in small marshy savannas near Boquete and 

 Bugaba, western Chiriqui, but judging by habitat in Costa Rica, may 

 also inhabit dry grassy fields near montane ponds. 



The species is known as yet in Panama only through a few specimens. 

 One, in the Smithsonian, received from Salvin, collected by Enrique 

 Arce, is marked only as from "Veraguas," which at that time may 

 have included Chiriqui. Salvin (Proc. Zool. Soc. London, 1870, p. 182) 

 mentions one from Bugaba (a lowland locality), Chiriqui, collected by 

 Arce. Salvin and Godman (Biol. Centr. Amer. Aves, vol. 1, 1888, pp. 

 106-107) wrote that of "Chiriqui examples we have now seen several." 

 In the bird collections in the British Museum there are 4, labeled "Chiri- 

 qui" without other data. A male in the Museum of Comparative 

 Zoology was taken by W. W. Brown 1500 m above Boquete, April 25, 

 1901. 



The American Museum of Natural History has 8 specimens from 

 western Chiriqui, almost all collected in 1904 and 1905 by H. J. Watson. 

 Six are labeled Boquete, at 2000, 3500, and 4000 ft., December 6, 21, 



