VENEZUELAN ORNITHOLOGY — FRIEDMANN AND SMITH 511 



Tolmomyias sulphurescens exorlivus (Bangs) 



Rhynchocyclus sulphurescens exortivus Bangs, Proc. Biol. Soc. Washington, vol. 

 21, 1908, p. 163. (La Concepci6n, Santa Marta). 



1 9 , Caicara, May 20, 1952; gonads slightly enlarged; iris pale yellow-white; 

 macilla black, mandible horn color; feet black. 



An adult bird in fairly fresh plumage. 



This flycatcher was fairly common locally in the deciduous seasonal 

 woods at Caicara during May. Its call note was a weak shree. 



Sublegatus arenarum orinocensis Zinimer 



Sublegatus glaber orinocensis Zimmer, Amer. Mus. Novitates No. 1109, May 15, 

 1941, p. 5 (Altagracia, Rio Orinoco, Venezuela). 

 1 cf Juvenal, Caicara, May 20, 1950; gonads small; skull not well ossified; base 

 of bill soft; iris brown; feet and bill black. 



Dr. J. T. Zimmer kindly identified this young bird for us. The 

 posterior lower parts are whitish, not yellow as in the adults and the 

 upperparts also lack the yellowish tone of mature birds, being dingy 

 brown with narrow white tips to the feathers. 



Camptostoma obsoletum venezuelae Zimmer 



Camptostoma obsoletum venezuelae Zimmer, Amer. Mus. Novitates No. 1109, May 

 15, 1941, p. 12 (La Cascabel, Rio San Felix, Venezuela). 

 1 9 , Caicara, March 15, 1953; gonads enlarged; skull well ossified; bird rather 

 fat; iris brown; bill dark brown; feet black. 



In our 1950 report we noted that the collector experienced difficulty 

 in distinguishing the present form from Phaeomyias murina incompta. 

 Further experience with both birds has greatly reduced the difficulty. 

 The Camptostoma is an active little flycatcher, which may be readily 

 observed in the upper portions of the leafless trees of March and 

 April, repeatedly calling swees-swees-sweesweeswees on a descending 

 scale. The Phaeomyias, on the other hand, is relatively quiet, 

 preferring the lower bushes, often well inside the foliage. The call 

 recorded was a thin, even peeeet. 



Family Hirundinidae: Swallows 



Pygochelidon cyanoleuca patagonica (Lafresnaye and d'Orbigny) 



Hirundo patagonica Lafresnaye and d'Orbigny, Synopsis avium, pt. 1, in Mag. de 

 Zool., vol. 7, cl. 2, 1837, p. 69 (Patagonia = Rio Negro). 

 1, unsexed, Barcelona, May 25, 1951; bird rather fat; iris, bill, and feet dark 

 brown; a bird in worn plumage, molting the body feathers. 



This specimen was collected on the seacoast at Barcelona, out of 

 a flock of over a hundred birds. During the second week of June 



