78 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
MICRORHOPIAS BOUCARDI BOUCARDI (Sclater). 
BOUCARD’S ANTWREN. 
Adult male.—General color deep black, passing into slate color on 
sides and flanks; interscapulars extensively pure white beneath the 
surface (partly exposed); anterior portion of lesser wing-covert area 
(except on bend of wing) white, the other lesser coverts and middle 
coverts with a small roundish terminal spot of white; greater coverts 
broadly tipped with white, forming a very conspicuous band across 
wing; rectrices (except middle pair) broadly tipped with white (the 
white tips growing smaller toward middle rectrices); under wing- 
coverts (except along border of wing) and broad edgings to inner web 
of remiges white; bill black; iris brown; legs and feet blackish 
(grayish blue in life); length (skins), 98-111 (106); wing, 47-50.5 
(48.6); tail, 43-49 (45.6); culmen, 13-14.5 (13.7); tarsus, 14.5-16 
(15.5); middle toe, 8.5-9 (8.9).¢ 
Adult female—Above marked with white as in adult male (that on 
interscapular region more restricted, however), but black of head, 
neck, back, and rump replaced by dark slate color or blackish slate 
(more or less intermixed with black on interscapular region); under 
parts (including malar region) plain rufous-tawny, deepest on throat 
and chest; under wing-coverts and edges of inner webs of remiges 
white, as in adult male; bill, etc., as in adult male, but the former 
usually more brownish; length (skins), 96-117 (107); wing, 46.5-49 
(47.7); tail, 43.5-47.5 (45.6); culmen, 12.5-14.5 (13.3); tarsus, 
14.5-16 (15.4); middle toe, 8.5-9.5 (8.8).° 
4 Fourteen specimens. b Thirteen specimens. 
Locality. Wing: |) Tad, | Cah | Fae Migale 
MALES. 
Four adult males from southeastern Mexico...............-.-.- 48.9 45,2 14.1 15.5 9 
Hight adult males from Guatemala............22..2.-.000022ee 48.2] 45.8 13.4] 15.5 8.9 
Two adult males from Honduras and British Honduras........| 49.3 46.7 14.3 15.3 9 
Four adult males ( M. b. virginata) from Nicaragua............. 49 43.6 14 15.9 8.9 
Ten adult males ( M. b. virginata) from Costa Rica ............. 49.7 44.3 13.7 15.7 9 
Seven adult males (/. b. virginata) from Panamd.............. 49. 4 45 13.7 15.6 8.9 
FEMALES. 
Six adult females from southeastern Mexico.................... 47.5 44.9 13.3 15.4 8.8 
Six adult females from Guatemala............0. eee eee e ee eee ee 47.9 46.3 13.2 15.4 8.7 
One adult female from British Honduras.............--2-2...- 47.5 45 14 15.5 9 
Ten adult females ( M. b. virginata) from Costa Rica............ 48.3 42.5 13.4 15.6 9 
Three adult females from western Panamé (Divala,Chiriqui)..| 48 4B.8 14 16.2 9.5 
One adult female from eastern Panama (line of railway)....... 47 42.5 13 16 9.5 
