24 COUES, BIRDS OF NEAV ENGLAND. 



Dendroeca virens Baird. — Black-throated Green War- 

 bler. Abundant summer resident. Most numerous during 

 its vernal and autumnal miofrations in the more southern 

 districts ; but I have found it breeding abundantly uear 

 Portsmouth, N. H. I believe it prefers pine woods dur- 

 ing the breeding season. 



No. 488, $. Essex Co. S. Jillsou, 1855. 

 No. 497, ?. '• " " " 



Dendroeca coeridescens Baird. — Black-throated Blue 

 Wood Warbler. D. Ccmadensis of former v^viters. "Si/lvia 

 sphac/nosa Jion. , or j) us ill a Wils." {Linsl. p. 257), is the 

 female or 3'oung of this species. Summer resident; com- 

 mon ; most so during its migrations. Breeds throughout 

 New England ; most numerously in its more northern 

 portions. 



No. 514, $, adult. Essex Co. S. Jillson, Spriug of 1855. 



Dendroeca coronata Gray. — Yellow-rumped Warbler. 

 "Myrtle-bird." Extremely abundant spring and autumn 

 migrant. A few probably winter in more southern sec- 

 tions. Not known to lireed except in northern portions 

 (Calais, Me., G. A. Boardman, Verr., p. 125). The 

 species has been known to occur in Greenland. 



No. 506, (J. Essex Co. S. Jillson, 1855. 



No. 507, ?. " " " " 



Dendroeca BlacMurnke Baird. — ^Irs. Blackburn's 

 Warbler. Summer resident ; not rare. 



The Hemlock Warbler, " Sylvlcola parus K\\(\..'" {Emm., 

 p. 3 ; Peab., p. 310 ; Putn.,-^. 226 ; Linsh,^. 257, etc.) , 

 is the young of this species. 



No. 495, $ . Essex Co. S. Jillson, 1855. 



No. 518, ?. " " " 



Dendroeca castanea Baird. — Bay-breasted Warbler. 

 Not common. Breeds, at least in more northern sections, 

 but is chiefly seen in spring and fall. 



The Autumnal Warbler {Sylvia aufumnalis Wils., 

 And.) of local writers is the young of this species. 



No. 515, (J. Essex Co. S. Jillsou, 1855. 



No. 485, J. •' " 



Dendroeca pina Baird. — Pine-creeping Warbler. 

 Common summer resident ; arriving very early, and re- 



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