98 



BIRDS OF THE REPUBLIC OF PANAMA PART 4 



tory) there are 3 marked with this locality. Several others are labeled 

 Chiriqui or "Veragua" without other locality. Griscom's listing of 

 "Veraguas" in the range probably is due to these specimens, as the bird 

 has not been recorded otherwise in that province (Griscom, Bull. Mus. 

 Comp. Zool., vol. 78, 1935, p. 358, where the range for Panama is cited 

 as "Chiriqui and Veraguas") . Ridgway (U.S. Natl. Mus. Bull. 50, pt. 

 3, 1903, p. 532) did mention one locality, Chitra, included in the modern 

 Province of Veraguas, but provides no literature basis for this locality 

 and there is no specimen in the Smithsonian so labeled. 



Slud in Costa Rica (Bull. Amer. Mus. Nat. Hist., no. 128, 1964, p. 

 289) characterizes this form as a "nonforest-inhabiting wren" of the 

 densest stream-bordering thickets and wild, tangled brushy growth 

 along wooded borders in the humid tropical belt. Its song, "in its slow 

 pace and rich dark quality, mellow as that of an oriole," differs from 

 that of other wrens. 



THRYOTHORUS FASCIATOVENTRIS ALBIGULARIS (Sclater) 



Cyphorhinus albigularis P.L. Sclater, Proc. Zool. Soc. London, vol. 23, June 26, 

 1855, p. 76, pi. 88. (Isthmus of Panama.) 



Characters. — Slightly lighter brown on upper surface and tibia; black 

 of lower parts somewhat less extensive; averaging smaller. 



A male, taken February 6, 1962, at Canita, near the Rio Bayano 

 (above El Llano), eastern Province of Panama, had the iris bright 

 reddish brown; maxilla black, mandible neutral gray; inside of mouth 

 neutral gray, except the tongue which had the distal half translucent so 

 that color from beneath appeared through it; inner face of tarsus dark 

 neutral gray; rest of tarsus with toes and claws fuscous-black. An- 

 other male, collected March 12, 1963, at Armila, eastern San Bias, also 

 had the iris reddish brown; maxilla and tip of mandible black; rest of 

 mandible neutral gray; tarsus, toes, and claws dusky neutral gray. A 

 third of the same sex, collected by R. S. Crossin at Gamboa, August 9, 

 1969, was similar. 



Measurements. — Males (10 from Code, Canal Zone, and San Bias), 

 wing 63.1-70.1 (66.5), tail 49.2-57.1 (53.0), culmen from base 20.0- 

 22.2 (20.7), tarsus 23.2-25.9 (24.5) mm. 



Females (10 from Code, Colon, Canal Zone, San Bias, and Darien), 

 wing 59.7-63.6 (61.3), tail 45.0-50.2 (47.2), culmen from base 19.0- 

 21.0 (19.8), tarsus 20.1-24.7 (23.0) mm. 



Resident. Locally fairly common in forested areas, from the Rio 

 Indio and its tributaries in western Colon, and the Caribbean slope of 



