‘BIRDS OF NORTH AND MIDDLE AMERICA. 29 
slaty; interscapulars with concealed basal portion extensively white; 
under parts, including malar region, plain white (sometimes tinged 
with buffy), passing into grayish on flanks; tibial feathers black 
basally, extensively white terminally (the posterior side of thighs 
sometimes uniform black); under tail-coverts black, often (irrespec- 
tive of locality) tipped or barred with white, rarely mostly white; 
bill black; iris carmine red; legs and feet dusky (bluish gray in life?) ; 
length (skins), 179-205 (194); wing, 87-99 (92.1); tail, 64-79 (71); 
culmen, 26-31.5 (28.5); tarsus, 33-37 (84.2); middle toe, 20-23.5 
(21,3).¢ ; 
Adult female —Above plain chestnut, darker on pileum, paler and 
duller on rump, the tail and primaries more brownish chestnut; 
loral and orbital regions dusky, passing into chestnut on auricular 
region; under parts (including greater part of malar region) plain 
white (sometimes tinged more or less with buffy), passing through 
pale buffy grayish into pale buffy brown or cinnamon on flanks; 
under tail-coverts light chestnut; thighs mixed light chestnut and 
buffy whitish; bill varying from horn brown to nearly black; iris 
carmine red; legs and feet horn color or dusky (bluish gray in life ?) ; 
length (skins), 169-220 (190); wing, 83-96 (89.4); tail, 64.5-75.5 
(70.2); culmen, 25-30.5 (28.1); tarsus, 32~36.5 (34.2); middle toe, 
20-23.5 (21.8).° 
Immature male-—Similar to the adult male but wing-coverts with- 
out white tips (the greater coverts sometimes narrowly tipped with 
@ Forty-seven specimens. 6 Thirty-six specimens. 
Fi ‘ F Cul- Tar- | Middle 
Locality. Wing. | Tail. | wen. cad. toe. 
MALES. 
Three adult males from Colombia (Rio Barratoro)...........- 92.5 73.3 27.8 34.7 21 
Yeu adult miales {OGl PRIAM A isc cicnccndaes anor seeseasxecans 89.6 69.9 28.1 35 22 
Ten adult males from Costa Rica...........-.---0..-.e22eee eee 93.7 71.6 29.2 35.7 22.9 
Six adult males from Nicaragua..............-.---.-----2-2++- 92.5 70.9 29.2 34.7 21.8 
Seven adult males from Honduras...............2..-2.--eee eee 92.5 70.7 27.8 34.3 21.1 
Six adult males from Guatemala..............-2-222-.22202000+ 91.2 70.5 28 34.7 21.2 
Five adult males from southern Mexico.................-2-+--. 93.7 72.8 29 35 21.3 
FEMALES. 
One adult female from Colombia (Rio Lima)..............-..- 88 68 25 33 21.5 
Two adult females from eastern Panamé (Loma del Leén)..... 87.2 66.2 26.2 34.5 21.7 
Eight adult females from western Panam4 (Chiriquf).......... 87.3 68.9 26.3 34.4 21.2 
Ten adult females from Costa Rica...........--....0-2--eee eee 91.6 70.7 29 34.6 22.5 
Six adult females from Nicaragua.............-...-..2022---05+ 91 71.4 29.2 34.3 21.7 
Two adult females from Honduras...............-2.-----2--00- 86.5 67.2 28.5 33. 2 21.2 
Four adult females from Guatemala...............2-----2---++ 87.9 72 28.4 34.6 22 
Three adult females from southern Mexico..............------- 91,2 73 29.3 34.7 21.5 
