158 PROCEEDINGS OF THE ACADEMY OF [1896. 



3. Adult males alike at all seasons, young of the year different : 

 Geothlypis, Sylvania canadensis, S. pusilla, Setophaga, Helmintho- 

 phila pinm, H. ruficapilla, Dendroica cestiva, D. virens, D. cceru- 

 lescens, D. vigorsii, D. tigrina, D. discolor, Compsothlypis. 



Regarding a few I ara in donbt. 



So far as I know, no Warblers molt the flight feathers in spring, 

 nor do the young molt them with their first plumage. 



Mniotilta varia (Linn.). Black and White Warbler. 



Plumages : first, first winter, nuptial, adult winter. 



31ale, — The worn condition of the plumage of some birds would 

 indicate that the spring molt is not as complete as in most Warblers. 

 Some individuals do not molt the tertials at this time while others 

 certainly do. The plumage of the first winter has only the sides of 

 the body streaked and the streaks dull. The adult winter plumage 

 is as heavily marked as the nuptial dress but has the throat white. 



Female. — Remains in the plumage of the first winter. 



Helmintliophila pinus (Linn.). Blue-winged AVarbler. 



Plumages: first, first winter, first nuptial, adult winter, adult 

 nuptial. 



Male. — Spring birds are always much worn on the tertials and 

 back, and probably have only a partial spring molt. The yellow 

 cap is wanting in the first winter, the lores are dull and the under 

 surface quite dull. Some spring males are dull and tinged with 

 olive below, with the cap ill-defined, these I take to be first year 

 birds. Adults are brilliant yellow. 



Female. — Like male, with the same two forms of spring plumage. 



Helmintliophila chrysoptera (Linn.). Golden-winged Warbler. 



Apparently the same plumages as the above. What I take to be 

 the plumage of the first spring is tinted with yellow below. The 

 female has the black replaced by gray. 

 Helminthopliila ruficapilla (Wils.). Nashville Warbler. 



Plumages : first, first winter, nuptial, adult winter. 



The plumage of this species shows still more abrasion in spring, 

 and there would seem to be little or no spring molt at this season, 

 after the first year. Birds in the first winter lack the pure gray on 

 the head, and show little or no chestnut on the cap. 

 Helminthophila peregrina ( Wils.). Tennessee Warbler. 



Apparently has the same number of plumages and molts as the 

 last. Spring birds are much worn. 



