82 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
Adult male —Above plain purplish slate color (between slate color 
and seal brown), deep grayish sepia or deep brownish slate; wings 
and tail black; anterior portion of lesser wing-covert area white, 
the remaining lesser coverts, together with middle coverts, with 
a small terminal roundish spot of white; greater coverts broadly 
tipped with white, forming a very conspicuous band across wing; 
remiges narrowly and indistinctly edged (except basally) with 
grayish brown, the edgings broader on tertials, where sometimes 
whitish terminally; three outermost rectrices (on each side) broadly 
tipped with white, this extending much farther on outer than on 
inner web, the extent of the white greatest (on both webs) on second 
rectrix; a broad superciliary stripe of white extending from sides 
of forehead to sides of nape, where confluent with a white area 
extending from sides of neck to flanks; loral, suborbital, auricular, 
and malar regions, chin, throat, chest, breast, abdomen, and under 
tail-coverts uniform black, the sides and flanks immaculate white 
outwardly, streaked black and white along exterior margin of the 
black median area; under wing-coverts black (the under primary 
coverts white, tipped with black); inner web of remiges broadly 
edged with grayish white; bill black, paler on tomia; legs and feet 
grayish black tile beau in life?); length (skin), 113- 116 (115); 
wing, 54.5-59 (55.7); tail, 45-49 (46.5); culmen, 14-15 (14.5); 
tarsus, 20-21.5 (20.3); middle toe, 11-12 (11.5).% 
Adult female—Above much as in adult male, but the general 
color decidedly more brownish (deep broccoli brown on back, etc., 
more grayish brown on pileum and hindneck), the remiges more 
distinctly edged with brown; sides of head (including superciliary 
stripe, which is less sharply defined than in adult male) pale grayish 
buffy or dull buffy whitish, interrupted by a narrow postocular 
streak of dusky, the suborbital region with very narrow and indis- 
tinct bars of dusky, the auricular region with fine shaft-streaks of 
whitish; chin and upper throat white, passing into buff on chest, this 
into paler buff on other lower parts, the under tail-coverts (some- 
@ Six specimens. 
Locality. Aine, | tail, | Pale.) Tes | aiate 
MALES, 
Six adult males from San Miguél Island.................------ 55.7 46.5 14.5 20.3 11.5 
Six adult males ( M. g. intermedia) from Colombia.............. 53.5 48 14.8 20.3 11.5 
Three adult males (M. g. margaritensis) from Margarita I., 
VGDOZUEL Ae iscciersnieiienjes See sanisemnisen Sate adenee ec neceenisice 53.7 | > 47.8 14.3 20 11.3 
Two adult males (M. g. intermedia) from Venezuela (main- 
Vand) oii siernamsoaratec aleclicnitamutatinna anens tesa csetncema 54.7] 49.5) 14 21 11.5 
One adult male ( M. g. tobagensis) from Tobago.....-.....-..-. 59.5 52.5 |....2... 22 12.5 
