CATALOGUE OF VERTEBRATES. 553 



V. gilvus, Vieill. Warbling Flycatcher, or Vireo. 



Colors like preceding, but has evidently ten primaries instead 

 of nine apparent, as in the two preceding. Length, 5 J inches ; 

 tail, 2^ inches. Nests in trees at a considerable height. 



"Abundant. Arrives in May, and a few remain during the 

 summer. Re-appears in August and September. Sociable, being 

 frequently seen in shade trees of the streets. Insectivorous." 



V. flavifrons, Vieill. Yellow-throated Flycatcher, or Vireo. 



Stout build; short bill and feet; white wing bars; rich olive 

 green above, becoming ashy on rump ; bright yellow below ; 

 belly white; yellow ring around eye. Length, 5|- inches; tail, 

 2 inches. Only nine primaries apparent. 



" More common than the following. Arrives in May, and is 

 found more frequently in open country than in secluded local- 

 ities. Prefers deciduous to evergreen trees. They breed in 

 June, building their nests at considerable elevation, in maple and 

 elm trees. Have generally disappeared by September 10th. 

 Insectivorous. Inoffensive." 



V. eolitarius, Wils. Blue-headed Flycatcher, or Vireo. Solitary 

 Greenlet. 



Ten primaries apparent ; color bright olive green ; crown and 

 sides of head bluish ash ; stripe to and around eye white, a dusky 

 line below it ; white below, somewhat washed with pale yellow. 

 Length, 5? 5 inches; tail, 2J inches. Stout and handsome., 



" Not numerous. More generally found in the northern hilly 

 sections of the State. Arrives in May. Some few probably 

 remain. Re appears in September. Prefers woodland." 



V. noveboracencis, Gmel. White-eyed Flycatcher, or Vireo. 



Wings short and rounded ; bright olive green above ; white 

 below ; sides and under tail coverts bright yellow ; wing bars 

 pale ; stripe to and around eye yellow ; eyes white. Length, 5 

 inches ; tail, 2^ inches. Found in thickets. 



" Uncommon. Seen occasionally in May and again in Sep- 

 tember. It probably breeds in the State. Strictly inoffensive." 



