APPENDIX. 461 



Kough-v iged Swallow. Stelgidopteryx serripennis. 



This is the least abundant of our swallows, but is never wanting 

 altogether, I believe. 



Purple Martin. Prague subis. 



Common, where boxes for their accommodation are provided. 



Cedar-Bird. Ampelis cedrorum. 



" Abundant, but less frequent in winter than at other seasons " 

 (Turnbull). My observations are the reverse. I certainly have 

 seen much larger flocks and more of them in winter. During the 

 severe January of 1884 they were exceedingly abundant. 



"Wax-Wing. Ampelis garrulus. 



" Has been occasionally shot near Philadelphia " (Turnbull). I 

 have seen two specimens of this northern species, both of which 

 were killed near Trenton, New Jersey. 



Red-eyed Fly-catcher. Vireosylvia olivacea. 

 Common from May until end of October. 



Philadelphia Greenlet. Vireosylvia Philadelphia. 



" Very rare " (Turnbull). I have met with but two specimens, 

 and these were collected twenty years ago ; but as these birds might 

 readily be confounded with other greenlets, when simply seen u on 

 the wing," it is probable that they are not so excessively rare as is 

 generally supposed. 



"Warbling Greenlet. Vireosylvia gilva. 

 Common from May to October, both inclusive. 



Blue-headed Fly-catcher. Vireosylvia solitaria. 



" Eather rare, arriving in April and departing in October " 

 (Turnbull). 



Yellow-throated Fly-catcher. Vireosylvia flavifrons. 



"Not uncommon from the end of April to September" (Turn- 

 bull). I have found the nests of this species in elm and maple 

 trees; usually at a considerable elevation; above rather than below 

 the so-called " nest-line." 



White-eyed Yireo. Vireo Novceboracensis. 



Common from March to October, both inclusive. Stragglers 

 are occasionally met with in midwinter. 



