374 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
female with basal half (more or less) of lateral rectrices brownish 
gray instead of bronze-green and middle rectrices darker and much 
duller bronze-green. 
Adult male.—Pileum and hindneck metallic bronze-green passing 
into greenish bronze, bronze, or coppery bronze on back, scapulars, 
wing-coverts, and rump; upper tail-coverts dusky brownish gray 
(sometimes partly bronzy); tail slightly glossy blue-black, the four 
middle rectrices tipped with deep brownish gray, the remaining 
rectrices narrowly edged and terminally margined with the same; 
remiges dull slate color, faintly glossed with purplish, the outermost 
primary narrowly edged with pale gray or grayish white; chin and 
throat bright metallic emerald green (more bluish green, but never 
blue, anteriorly), passing into metallic bronze-green on rest of under 
parts; anal tufts and tuft on each side of rump white; under tail- 
coverts grayish white with a large subterminal spot of slightly glossy 
bluish dusky or blue-blackish; terminal half (more or less) of maxilla 
dull black, the basal portion brownish (reddish in life); mandible pale 
brownish (reddish in life), passing into blackish terminally; iris dark 
brown; feet dusky; length (skins), 86-94 (91); wing, 51-53. 5 (51.7); 
tail, 31-35.5 (83.1); middle rectrices, 23-25.5 (24.2); culmen, 
17.5-19 (18.2) .¢ 
Adult female—Above metallic bronze-green, duller (sometimes 
dull brownish gray) on forehead; remiges as in adult male; middle 
pair of rectrices dusky metallic bronze-green, darker terminally or 
subterminally; remaining rectrices with basal half (more or less) 
dull bronze-green, then bluish black, the tip (broadly on outermost) 
brownish gray—the outermost rectrix with brownish gray (darker 
basally) replacing bronze-green; under parts sooty gray or deep 
drab-gray, slightly paler on chin, the sides (including sides of neck) 
conspicuously glossed or spotted with metallic bronze-green; femoral 
tufts and tuft on each side of rump white; under tail-coverts brown- 
ish gray passing into grayish white on margins, sometimes with a 
subterminal mesial streak of dusky; a small pale gray or grayish 
white postocular spot, and beneath this a dusky space extending to 
beneath eye; bill, etc., as in adult male, but maxilla mostly (some- 
times wholly) blackish; length (skins), 87-93 (89); wing,49.5-50.5 
(50); tail, 28-30 (29.4); the middle rectrices, 25.5-27 (26.4); culmen, 
19-21 (20.1).° 
Tres Marias Islands (Maria Madre and Cleofa Islands), western 
Mexico. 
Circe latirostris (not Cynanthus latirostris Swainson) Grayson, Proc. Bost. Soc. 
N. H., xiv, 1871, 282, part (Tres Marias)—Lawrence, Mem. Bost. Soc. 
N. H., ii, 1874, 292, part (Tres Marias; habits). 
* Five specimens. 6 Four specimens. 
