568 NORTH AMERICAN BIRDS. 
@. Colors brighter, the upper parts more decidedly olivaceous, the lower 
parts with a strong brownish buffy tinge, yellow and orange of head 
more intense, etc. Eggs 56 xX .40. Hab. Pacific coast, from Cali- 
fornia to Sitka.........ccssseeeeeeee 748a. R. satrapa olivaceus Bairp. 
(98.) Western Golden-crowned Kinglet. 
, Forehead and broad stripe across lores and behind eye black; crown-patch 
in male entirely vermilion-red. 
Otherwise much like R. satrapa. “Length 44 inches, extent of wings 
6; bill along ridge nearly 4, along the gape nearly 3; tarsus 4.” 
Hab. “ Fatland Ford, on the Schuylkill river,” Pennsylvania. (Only 
one specimen known to have been obtained, this by Audubon, on 
June 8, 1812.)........cceeeceeees —. R. cuvieri Aup. Cuvier’s Kinglet. 
a?, Nostrils hidden by a tuft of small bristle-like feathers; adult without any black 
on head. (Subgenus Corthylio CABANIS.') 
b. Above grayish olive, the head not darker than back; adult male with 
crown-patch bright minium-red, or scarlet-vermilion ; length 3.75-4.60, 
wing 2.20-2.30, tail 1.85-1.90, bill from nostril .20-.22, tarsus .75. Vest 
semi-pensile, very bulky (about 4.00 x 3.00-4.00 outside), composed of 
fine strips or shreds of soft bark, feathers, etc., and green moss, lined 
with hair and feathers ; cavity about 3.00 deep by 2.00 across; attached 
to extremity of branch of pine or spruce tree 10-20 feet, or more, from 
ground. Eggs .55 x .43, dull whitish or pale buffy, faintly speckled or 
spotted, chiefly round larger end, with light brown (sometimes nearly 
plain). Hab. Whole of North America, breeding from extreme northern 
border and higher mountains of United States northward; wintering 
in more southern United States and south to Guatemala. 
749. R. calendula (Linn.). Ruby-crowned Kinglet. 
b*. Above sooty olive, the head usually appreciably darker than back ; adult 
male with crown-patch pinkish or purplish vermilion-red ; wing 2.00- 
2.20, tail 1.70-1.95, bill from nostril .22-.25, tarsus .80. Hab. Guada- 
lupe Island, Lower California. 
750. R. obscurus Ripew. Dusky Kinglet. 
Genus POLIOPTILA Scrater. (Page 566, pl. CXXIV., fig. 2.) 
Species. 
Common Cuaracters.—Adult males: Above plain bluish gray, the top of the 
head sometimes glossy black; wings dusky, with bluish gray edgings (the tertials 
sometimes broadly edged with white); tail black, the exterior feathers partly 
(sometimes almost wholly) white; lower parts white or grayish. Adult females 
similar to males, but without any black on head, and with the gray of a less 
bluish tint. Young similar to adult females, but colors much duller, the gray of a 
duller, more brownish hue. Nest built in trees, usually saddled upon horizontal 
1 Corthylio Can., Jour. fiir Orn. 1853, 83. Type, Motacilla calendula Linn, 
