68 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



This little-known population of the Darien mountains was men- 

 tioned by Griscom (Bull. Mus. Comp. Zool.. vol. 78, 1935, p. 338) 

 with the statement "Mt. Pirri, Darien (fide Chapman)" and no other 

 comment. This must refer to a female taken May 1, 1912, by E. A. 

 Goldman on Cerro Pirre, at 1580 meters elevation near the head of 

 Rio Limon. The collector, in a brief manuscript note, said of it 

 "only one shot in the top of a very tall tree." The bird is in some- 

 what worn plumage with the central tail feathers in molt. There is 

 in addition a male sent to me by Dr. Pedro Galindo, taken on June 3, 

 1963, at 1460 meters on Cerro Mali, a spur of Cerro Tacarcuna, 

 Darien. The two specimens are slightly darker on the lower surface, 

 and also faintly darker on the back than rufigenis from Chiriqui and 

 Costa Rica. They are assigned to C. e. griseigularis Ridgway from 

 western Colombia, but with better material, may prove to be separable 

 as a distinct subspecies. 



Alden Miller (Univ. Cahfornia Publ. Zool., vol. 66, 1963, pp. 

 21-22) found a nest of this race at San Antonio, Valle, Colombia, 

 on March 17, 1958. This he described as "a bulky, hanging, covered 

 mass of vegetation on a hanging limb roughly a foot and a half in 

 diameter and 30 feet above the ground." Oates and Reed (Cat. Coll. 

 Birds Eggs Brit. Mus., vol. 3, 1903, p. 177) list two eggs collected 

 by T. K. Salmon near Frontino, Antioquia, Colombia. These, ac- 

 cording to Schonwetter (Handb. Ool., pt. 14, 1967, p. 27) are white, 

 and measure 22.4x15.2, and 24.1x16.5 mm. 



CRANIOLEUCA VULPINA DISSITA Wetmore: Rusty-backed 

 Spinetail, Coliaguda Rojiza 



Cranioleuca vulpina dissita Wetmore, Smithsonian Misc. Coll., vol. 134, no. 6, 

 July 8, 1957, p. 55. (Isla Coiba, Panama.) 



Small, long-tailed and slender ; russet brown above, huffy below, 

 side of head dull buff. 



Description. — Length 130-140 mm. Adult (sexes alike), spot on 

 either side of forehead behind the nostril, and lores white ; crown 

 russet ; back and scapulars tawny ; wings and tail russet ; rump snuff 

 brown ; narrow superciliary pinkish buff ; sides of head dull cream- 

 buff, faintly streaked with dusky ; throat white ; sides of neck, breast, 

 and abdomen light buffy brown ; sides and flanks somewhat darker ; 

 under tail coverts tawny ; under wing coverts and edge of wing 

 cinnamon-buff with edgings of tawny ; inner webs of primaries and 



