44 



NORTH AMERICAN BIRDS. 



exactly like the type. There are no authentic males before me, though only two are 

 marked as females ; the extremes of the series probably represent the sexual discrepancy 

 in size. 



Young ((^,12,814, Racine, Wisconsin, July, 1859; Dr. R. P. Hoy). Upper surface 

 continuous plain dark sepia-olive ; face darker, approaching fuliginous-vandyke, — perfectly 

 uniform ; around the edge of the forehead, a few shaft-lines of white ; scapulars with a 

 concealed spot of pale ochraceous on lower web ; lower feathers of wing-coverts with a 

 few white spots ; outer feather of the alula scalloped with white ; primary coverts per- 

 fectly plain ; five outer primaries with white spots on outer webs, these diminishini^ 

 toward the end of the feathers, leaving only two or three series well defined ; tail darker 

 than the wings, with three narrow bands composed of white spots, these not touching 

 the shaft on either web. " Eyebrows "' immaculate white ; lores more dusky ; face and 

 eyelids dark vandyke-brown ; sides of the chin Avhite. Throat and whole breast like the 

 back, but the latter paler medially, becoming here more fulvous ; rest of the lower parts 

 plain fulvous-ochraceous, growing gradually paler posteriorly, — immaculate. Lining of 

 the wing plain dull white; under surface of primaries with dusky prevailing, but this 

 crossed by bands of large whitish spots ; tlie tlu'ee outer feathers, however, present a 

 nearly uniformly dusky aspect, being varied only basally. Wing formula, 3, 4 - 2 ^ 5 

 6-7, 1. Wing, 5.50; tail, 2.80; culmen, .45; tarsus, .80; middle toe, .65. 



Hab. North America generally. Cold temperate portions in the breeding-season, 

 migrating southward in winter. Mexico (Oaxaca, Sclater, P. Z. S. 1858, 295) ; Cali- 

 fornia (Dr. Cooper) ; Cantonment Burgwyn, New Mexico (Dr. Anderson) ; Washington 

 Territory (Dr. Kennerlv). 



A specimen (15,917, ^, Dr. C. B. Kemierly, Camp Skagitt, September 29, 

 1859) from Washington Territory is exactly similar to the young described 



Nyctale acadica. Voung, 



Nyctale acadica. Adult. 



above. No. 10,702 (Fort Burgwyn, New jVIexico ; Dr. Anderson) is much 

 like it, but the facial circle is quite conspicuous, the feathers having medial 

 v/hite lines ; the reddish-olive of the breast and the fulvous of the belly 

 are paler, also, than in the type. No. 12,866, United States, (Professor 

 Baird's collection, from Audubon,) is perfectly similar to the last. 



