MNIOTILTID.E: AMERICAN WARBLERS. 341 



W. pusil'la, (Lat. pusilla, puerile, petty, small. Fig. 198.) Green Black-capped Fly- 

 catching Warbler. Wilson's Sylvan Flycatcher. Wilson's Warbler. Adult 

 ^ 9 : Upper parts, including exposed edgings of wings and tail, 

 bright yellowish-olive ; under parts, including front and sides of head 

 and superciliary line, rich yellow, shaded with olive on sides. A 

 squarish, glossy blue-black patch on crown. Wings and tail plain 

 fuscous, with greenish edgings, unmarked with other color. Upper 

 mandible dark ; under mandible and feet light. Length 4.75 ; ex- 

 tent (1.75-7.00; wing 2.00-2.25; tail 2.00. Young: Lacking the 

 black cap ; as sometimes also the 9 • There is very little variation fig. 198. — Black-capped 



in this species, according to age or season, though the adult summer Warbler, nat. size. (Ad. nat. 

 birds are the more richly colored. Eastern N. Am., in wooded re- 

 gions ; common, migratory. Breeds from the northernmost States northward to the limit of 

 trees ; occasional west in migration in the Rocky Mountains ; winters extralimital. Nest on 

 the ground ; eggs 4-5, 0.60 X 0.50, white, speckled and blotched with dark reddish-brown 

 and lilac. 



W. p. pileola'ta. (Lat. pileolata, wearing the pileum, a kind of cap.) Western Black- 

 capped Fly-catching Warbler. Pileolated Sylvan Flycatcher. Specimens from 

 the southern Rocky Mts. and Pacific coast region are frequently of a brighter yellow, almost 

 orange, on head and fore parts below. Breeds from Rocky Mts. to Pacific and N. to Alaska. 

 W, canaden'sis. (Lat., of Canada. Fig. 199.) Canadian Fly-catching Warbler. 

 Bonaparte's Sylvan Flycatcher. Adult ,$, in spring: Bluish-ash; crown speckled with 

 lanceolate black marks, crowded and generally continuous 

 ■ T-'?^^^^ on forehead ; latter divided lengthwise by a slight yellow 



- - '"•^r'jty?^ line; short superciliary line and edges of eyelids yellow; 



»^3Pfe^^^^^^ lores black, continuous with black under eye, and this pass- 

 :. -,7'g,:.-- M f^-mp' ing ^s * chain of black streaks down side of neck and pret- 



m^^^^B^^Br^ tily encircling throat like a necklace of jet ; excepting these 



^^Ij^P^^^^H streaks and the white under tail-coverts, entire under parts 



▼ '^f^^F "^^^^ yellow ; wings and tail unmarked ; feet flesh-color. ^ 



J^f iu autumn with the yellow very rich, even tipping feathers 



J^ of the black necklace. Length 5.25-5.50; extent 7.75- 



'iy 8.25 ; wing 2.50 ; tail 2.25. In the 9 and young the black 



r. A- ^, . ,.• <^'f crown, cheeks, and necklace is obscure or much restricted, 



Fig. 109. — Canadian Fly-catchmg _ ' ' 



Warbler. (L. A. Fuertes.) and in the youug the back may be glossed with olive; but 



tliey cannot be mistaken for auy other species. Eastern 

 X. Am.; an abundant and beautiful woodland species; migratory; breeding in the Allegha- 

 nies from as far S. at least as tlie mountains of western N. Carolina, where I have found fledg- 

 lings, and at lower elevations from the Middle States occasionally, from New England regularly, 

 northward to the limit of trees; in winter S. to Central and S Am. Nest on the ground or 

 very close to it in the grass or weeds of wet woods ; eggs 3-5 0.75 X 0.55, wliite, dtitted and 

 blotched with reddish-brown and other shades, as usual. 



Note on Wilsonia microcephnln. The small-headed Flycatcher, Muscicapa minuta Was., 1812, supposed to belong 

 to this genus, continues unknown. It was renamed Sijlrania microcephala by Ridgway in 1885, and so stands with a 

 query, in A. O. U. Hypothetical List, I8SG to date, p. 333. 



SETO'PHAGA. (Gr. o-jjs, (tt^tos, ses, setos, an insect ; (fxiyo), pliago, I cat.) Redstarts. 

 Bill tlioroughly Muscicapine in depression and breadth at base, where wider than liigh, 

 straightuess of superior and lateral outlines, and development of rictal bristles, which reach far 

 beyond nostrils. Wings pointed, not sliortcr tlian tail ; 2d, 3d, and 4th quills nearly equal and 



