l60 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



placed about 2 meters from the ground in a small tree, where it was 

 suspended from a forked limb. Male and female shared incubation. 

 "The birds approached the nesting tree walking on the ground 

 rather than flying from the branches above. ... I could hear the ap- 

 proaching bird singing a sweet warbling song. When it reached the 

 base of the tree it hopped to the lowest branch and then came up limb 

 by limb, singing as it came. . . . Both birds sang and approached the 

 nest in the same manner." Another nest was recorded on July 11. 

 No description of the eggs was given. 



The supposed darker race that Griscom named intensus from 

 Darien is not justified in the specimens that I have examined. In 

 eastern Darien and eastern San Bias, part of the females tend to be 

 darker colored, as an approach to those of the subspecies D. p. fleni- 

 mingi that is found from central Choco in western Colombia south 

 into Ecuador. One collected at Jaque March 30, 1946, is especially 

 dark. Others, from Cerro Sapo and eastern Comarca de San Bias 

 show this tendency but to a lesser degree. Griscom observed this 

 and made it the basis for his subspecies D. p. intensus. Recognition 

 of this difference does not seem warranted as it is variable and 

 passes finally to the subspecies mentioned. 



In the original description, cited at the head of the present account, 

 Salvin gave the locality for his specimens, received from Arce, as 

 "Veragua." The following year (Proc. Zool. Soc. London, 1867, 

 p. 144) he cited them as from "Santiago de Veragua." This was 

 repeated, with a slight change in spelling, as "Santiago de Veraguas" 

 by Salvin and Godman (Biol. Centr.-Amer., Aves, vol. 2, 1892, 

 p. 207). Santiago, far down in the Pacific lowlands, is obviously 

 wrong, as in western Panama this bird is present only on the Carib- 

 bean slope. This was pointed out by Griscom (Bull. Mus. Comp. 

 Zool., vol. 72, 1932, pp. 342-343) where he stated that Arce's speci- 

 mens must have been collected "at the terminus of the old Calovevora 

 trail" across the divide from Santa Fe. Calovevora, thus, is to be cited 

 as the type locality. 



An early report by M. A. Carriker, Jr., of the related species 

 Dysithamnus striaticeps on the Panamanian side of the Rio Sixaola 

 (see Eisenmann, Species Middle American Birds, Trans. Linn. Soc. 

 New York, vol. 7, 1955, p. 61) proves to be invalid. The single speci- 

 men collected by Carriker in the area of the "Rio Sicsola" (now called 

 the Sixaola) is a female. Carnegie Museum no. 24176, taken Octo- 

 ber 10, 1904 (collector's number 1269). In his account of the birds 

 of Costa Rica (Ann. Carnegie Mus., vol. 6, 1910, p. 607) Carriker 

 listed this bird (among other specimens) as Dysithamnus striaticeps. 



