-NOTES' ON GUAITEMALAN BIRDS' — WETMOKE 555 



saw the female resting quietly in the sun a few feet away and secured 

 her. The disparity in size between male and female is astonishing, 

 the former being fully one-third larger in bulk, a difference readily 

 evident in the following measurements: Male, wing 61.0, tail 52.8, 

 culmen from base 10.2, tarsus 18.3 mm.; female, wing 52.2, tail 41.1, 

 culmen from base 8.9, tarsus 16.2 mm. Both birds are in fresh 

 plumage and agree in the depth of color in the greenish yellow of the 

 sides and flanks. 



ONCOSTOMA CINEREIGULARE (Sclafer) 



Todirostrum cincreigulare Sclatee, Proc. Zool. Soc. London, 1856 (Jan. 26, 1857), 

 p. 256 (Cordoba, Veracruz, Mexico). 



While I was trying to follow a whistled bird call in a thicket at 3,200 

 feet elevation below Alotenango on November 30, a tiny flycatcher 

 flew to a perch in open view. For the moment, intent on the other 

 matter, I paid little attention to it until suddenly it rose to the full 

 length of its legs and uttered a toadlike, trilling note, a call of which 

 I had been vaguely conscious before. The call came constantly for 

 several minutes before I caught sight of the bird again so that I could 

 secure it, to find that it was the bent-billed flycatcher, one of the most 

 curious of its family. The eye was brownish white. 



In a good series of this bird in the United States National Museum 

 from southern Mexico to Costa Rica there are only two from the Pa- 

 cific slope, the bird from Alotenango, and a skin secured by Sumichrast 

 at Tapana, near Santa Efigenia, Oaxaca. The skin from Alotenango, a 

 male, does not differ from specimens from Veracruz. The second bird 

 has an unusually large bill, but there is much variation in this and 

 it is equalled by one specimen from eastern Honduras. I notice no 

 color differences. This is interesting in view of the form recently pro- 

 posed by Brodkorb,^* which is described as having a larger bill and 

 greener crown with a range on the Pacific lowlands from the Isthmus 

 of Tehuantepec to Costa Rica. Van Rossem ^^ records, on the other 

 hand, that his skins from El Salvador have slightly smaller and less 

 arched bills than those he had seen from Costa Rica. 



Family HIRUNDINIDAE 



NOTIOCHELIDON PILEATA (Gould) 



Atticora pileata Gould. Proc. Zool. Soc. London, Nov. 9, 1858, p. 355 (Guate- 

 mala). 

 On the evening of November 26 Axel and Guillermo Pira brought 

 me five of these little swallows, taken from about 30 found sleeping 



=* Oncosfoma cinereigvlii-e pariftca Brodkorb, Occ. Pap. Mue. Zool. Univ. Michigan. No. 

 401, March 1, 1939, p. 7 ( Finca Esperanza, Chiapas). 

 2= Field Mus. Nat. Hist., zool. ser,, vol. 23, 1938. p. 390. 



