52 PROCEEDINGS OF THE NATIONAL MUSEUM [vol.83 



May 6 they were very common. They were found near San Juan, 

 Dominican Repubhc, on May 7 and 19; near Las Cahobes, Haiti, one 

 was taken and many seen on May 20; and we found them at Thom- 

 azeau on May 22, and at L'Arcahaie on May 23. 



Family VIREONIDAE, Vireos 



VIREO OLIVACEUS OLIVACEUS (Linnaeus) 



Jamaican Vireo 



Muscicapa olivacea Linnaeus, Syst. Nat., ed. 12, vol. 1, 1766, p. 327 (Jamaica"). 



This vireo is one of the most widely distributed woodland birds of 

 the region here considered. In the north of Haiti we found it at 

 Dessalines, March 25; near Trou, March 26; and near Terrier Rouge, 

 March 27 to 30. Birds collected were near breeding season. In the 

 La Hotte region these vireos were common, and after leaving Aux 

 Cayes we noted them regularly all along the mountain trails, though 

 on the Pic de Macaya they were restricted to the lower slopes and 

 did not enter the dense rain forest, not being found on this mountain 

 above 1,300 meters altitude. At La Cour Z' Anglais they were espe- 

 cially common, and we were awakened at dawn on April 23 by a loud 

 chorus of song from these birds on the adjacent mountain slopes. 

 On lie a Vache this vireo was common from April 2S to 30, and near 

 Jacmel we found it on May 5. It was noted regularly from the high- 

 way in crossing from Port-au-Princo to near Azua, Dominican Repub- 

 lic, on May 6 and 7, and on May 9, 10, and 18 it was found near 

 Barahona. A few were noted on Beata Island. It was recorded near 

 L'Arcahaie, Haiti, on May 23. 



LAWREMCIA nana (LTwrence) 



Flat-billed Vireo 

 Empidonax nanus Lawrence, Ibis, 1875, p. 386 (Dominican Republic). 



On the low elevation of the Morne des Mammelles, near Terrier 

 Rouge, Haiti, on March 27, attention was attracted by a trilling song 

 that Wetmore had heard at Sanchez in 1927, and, on following it up, 

 in a few minutes he had in hand a specimen of the rare flat-billed 

 vireo, which verified the supposition of 4 years earlier that the song 

 in cpiestion must be that of this species. We found the bird fairly 

 common in the semiarid forest there, and in all we obtained nine 

 specimens, taken on March 27 and 30. They ranged in low, dense 

 forest where they moved about slowly, seldom far from the ground 

 and occasionally on it, hopping or fluttering from perch to perch, 

 in appearance and habit strongly suggestive of Bell's vireo. After 

 each move they rested quietly, turning the head slowly about to 



