564 BIRDS OF THE REPUBLIC OF PANAMA- — PART 4 



1938, p. 174), and at Almirante, Bocas del Toro. Beyond Panama, this 

 race is found in southwestern Costa Rica and across northern Colom- 

 bia to the western slope of the Eastern Andes in Norte de Santander; 

 other races range to Brazil and Bolivia. 



The Slate-colored Seedeater differs from other seedeaters in that it 

 is found primarily in woodlands. It usually occurs in pairs or small 

 groups. The song is very different from that of other Panama seed- 

 eaters, but does resemble that of several South American species. The 

 song is "a series of fast high sibilant notes, st-st-st-st-st-st, sometimes 

 varied to a thin rattle" (Ridgely, op. ext., p. 333) . The stomach of one 

 that I shot from a tree crown along a forest quebrada at Pucro, Darien, 

 had a few developing rice grains that had been hulled. 



The one nest I have seen was collected by Dr. A. A. Allen in the 

 Canal Zone. It was made of leaves, lined with rootlets, placed in a 

 bamboo vine about 5 m above the ground. H. von Wedel (Griscom, 

 op. cit. ) noted that at Puerto Obaldia, San Bias, nearly all individuals 

 were breeding in July and August. 



SPOROPHILA TORQUEOLA MORELLETI (BonaparteJ: White- 

 collared Seedeater, Arrocero Cuelliblanco 



Spermophila morelleti Bonaparte (ex Pucheran MS), 1851?, Consp. Avium. 1 

 (1850), p. 497. (Peten, Guatemala.) 



Very small; bill thick; male, upper surface mostly black, with white 

 band across nape and white bars on wings; upper breast black; rest of 

 undersurface whitish; female, upper surface mostly brownish olive, 

 with two whitish bars on wings; undersurface buffy. 



Description. — Length 95-103 mm. Adult male, entire upper surface 

 except rump black, with white band from throat across nape sometimes 

 partially covered; rump light buffy brown; wings black, with middle 

 and greater coverts and tertials tipped white, and all remiges except 

 two outermost primaries white at base; tail black; lower rim of eye 

 white; sides of head black; throat and band extending around nape 

 white; upper breast black; rest of undersurface white, tinged buff; 

 underwing coverts white. 



Adult female, entire upper surface brownish olive; lesser wing co- 

 verts brownish olive; other wing coverts and tertials dusky, tipped 

 whitish, and edged with buff; remiges and rectrices dusky, finely edged 

 with buff; undersurface cinnamon-buff; underwing coverts white. 



Measurements. — Males (10 from Bocas del Toro and Costa Rica), 

 wing 49.3-52.5 (51.1), tail 42.0-46.5 (44.2), oilmen from base 8.6-9.9 

 (9.4), tarsus 14.8-15.9 (15.2) mm. 



