358 BULLETIN 15 5, UNITED STATES NATIONAL MUSEUM 



of its bill on this occasion being distinctly audible. * * * The notes 

 of this vireo resemble a clear, whistled rather titmouse-like wit-wit- 

 wit-wit-wit, sometimes varied to a more rapid " wi-wi-wi-wi-wV 

 Its note when scolding resembles that of V. griseus." He did not find 

 nests but believed that they were breeding on the northern peninsula 

 in March, and on Gonave in May and June. Poole and Perrygo col- 

 lected one at Fort Liberte February 8, 1929. Wetmore in 1927 ob- 

 served the flat-billed vireo at two localities. On March 30 with Dr. 

 G. N. Wolcott near Mont Kouis as the motor car in which he rode 

 stopped beside the road a slender little bird appeared in a scrubby 

 tree, six meters away hopping and peering about in a leisurely way 

 in its search for insects. It was typically vireolike in action differ- 

 ing only in the more slender form, and longer tail than ordinary in 

 that group. The light eyes were easily evident. This individual 

 disappeared into heavier brush and could not be found again. It 

 was seen within 50 meters of the sea, near the base of a steep hill 

 where dense scrub grew in a stony soil beneath taller trees which now 

 were leafless. On May 7 at the summit of the hill above the town of 

 Sanchez, Dominican Republic, one came out of a dense tangle of 

 vines almost within reach in response to a squeak. It hopped about 

 in leisurely manner and flew with quick, certain flight strongly sug- 

 gesting a vireo. It disappeared soon in the dense tangle but later 

 was located again and collected. A low, whistled song of two notes 

 constantly repeated resembling wheury wheuinj wheury wheury and 

 so on for six or eight repetitions that came constantly from the same 

 dense tangles of vines he was inclined to attribute with some cer- 

 tainty to this species, though he failed to locate the singer, since he 

 was familiar with the notes of other birds found at this point and 

 recognized these as new to his experience. The one taken, an adult 

 female about to breed, had the iris dull ivory white ; base of mandible 

 dull whitish, rest of bill dusky; tarsus and toes gray number 6 (of 

 Ridgway). 



From scanty information at hand it appears that this species is 

 found principally among low limestone hills grown with scrub and 

 that it may occur in humid or arid sections, being perhaps more com- 

 mon in the latter. 



There are two color phases in this species, one in which the lower 

 surface is strongly suffused with yellow, and one in which the under- 

 pays are white with only the faintest tinge of yellow in the center of 

 the abdomen. The yellow phase seems to predominate as ten of 

 twelve skins in the United States National Museum are of that color 

 and only two, one of them the type of the species, are white. White 

 and yellow birds are alike in size, and of the white phase one comes 

 from Gonave and one from the main island. Birds from Gonave do 



