10 



1875. Like most of the previously described young Warblers, this bird 

 has a narrow central line of yellow feathers extending down the throat 

 and jugulum to the breast. 



27. Dendroeca caerulescens. 



First plumage : male. Eemiges and rectrices as in autumnal males, the 

 former slightly paler in color. Rest of upper parts, including the wing- 

 coverts, dark olive-brown ; sides of head very dark brown ; lores black ; 

 throat, jugulum, lower eyelids, and a very conspicuous supra-orbital line, 

 pale buff ; breast and sides ashy, tinged with olive. Abdomen, anal re- 

 gion, and crissum strong sulphur-yellow. White spot on base of prima- 

 ries fully developed. 



First plumage : female. Remiges and rectrices as in autumnal female. 

 Rest of upper parts, including wing-coverts and sides of head, light olive- 

 brown. Lores dull black. Superciliary line, both eyelids, throat, jugulum, 

 abdominal and anal regions, with crissum, light buff. Breast and sides 

 olive, tinged with buff. Spot on base of primaries dirty-white. From two 

 specimens, male and female, in my collection, shot with parents at Upton, 

 Me., August 11, 1873. The male above described shows a few black 

 feathers on one side of the throat. Several adult females in my collec- 

 tion, taken both in spring and fall, lack the white wing-patch altogether. 

 Others have it but faintly indicated. 



28. Dendrceca coronata. 



First plumage: female. Upper parts, in general, dull grayish-white, 

 tinged with brownish, heavily streaked with slaty-black, the streaks 

 broadest on the back and narrowest on the pileum ; rump soiled white, 

 with well-defined streakings like the back. Lower parts pale lemon, 

 tinged with brownish on the throat, narrowly but distinctly streaked with 

 dull black over the entire surface. From a specimen in my collection, 

 shot at Upton, Me., August 7, 1874. The first plumage of no other bird 

 that I am acquainted with exhibits such a remarkable variation from the 

 more mature stages. The specimen just described resembles closely, in 

 general markings and coloration, the Pine Finch {Chrysomitris pinus). 

 As is well illustrated by a full suite of specimens in transitional stages, 

 the yellow of the rump is acquired early in the first moult, which is very 

 nearly completed, in most cases, before that of the crown appears. 



29. Dendroeca blackburniae. 



First plvmage : male and female. Eemiges, rectrices, etc., as in au- 

 tumnal adult ; rest of upper parts uniform dark brown, each feather on 

 the back edged with light buff ; the white scapular stripe poorly defined. 

 Head markings precisely similar in pattern to the adults', but with the 

 orange everywhere replaced by white, slightly tinged with buff on pos- 

 terior half of superciliary line. Throat and entire under parts, in the 



