40 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
THAMNOPHILUS DOLIATUS MEXICANUS Allen. 
MEXICAN ANTSHRIKE. 
Similar in coloration to T. d. doliatus,? but wing averaging much 
shorter and tail relatively longer. 
Adult male.—Above black, the forehead spotted or streaked, more 
or less, with white, the elongated feathers of crown white (mostly 
concealed) with a large apical guttate spot of black, the remaining 
upper parts barred with white (the white bars always much less than 
half as wide as the black interspaces), the white bars on rectrices and 
tertials not reaching to shaft (except terminal bar on tertials); sides 
of head, chin, and throat streaked with black and white, the first 
with the two colors about equal in amount, the chin and throat with 
the white usually predominating; rest of underparts broadly and 
sharply barred with black and white, the bars of the two colors of 
nearly equal width, except (sometimes) on center of abdomen, where 
the black bars are narrower; maxilla brownish black, pale grayish 
blue along tomium; mandible pale grayish blue; iris yellow; legs and 
feet grayish dusky (grayish blue in life); length (skins), 138-167 
(156.5); wing, 68.5-78.5 (72.6); tail, 57.5-69 (62.8); culmen, 18.5-20.5 
(19.6); tarsus, 25-28 (26.6); middle toe, 14.5-17 (15.5).® 
Immature male—Similar to the adult male but plumage more or 
less strongly suffused with pale ochraceous. 
Adult female——Pileum bright chestnut or rufous-chestnut, paler 
on forehead; supra-auricular region, hindneck and sides of neck 
light ochraceous or buffy (sometimes buffy whitish on sides of neck), 
broadly streaked with black; rest of upper parts plain cinnamon- 
rufous or tawny-chestnut, usually paler and tinged, more or less, 
with olive-ochraceous on rump and upper back; a narrow orbital 
ring of buff or buffy white; loral, suborbital auricular, and malar 
regions buff or buffy whitish, more or less streaked or flecked with 
black (most heavily on auricular region); chin and throat pale buff 
to ochraceous-buff, often more or less streaked (mostly laterally or 
posteriorly) with black or dusky; rest of underparts ochraceous 
or ochraceous-buff, deepest on chest and sides, paler on abdomen, 
where sometimes pale buff; usually the underparts are quite im- 
maculate, but rarely there are indications of dusky bars on breast 
and tibia, and often more or less distinct blackish or dusky spots or 
streaks on upper chest; under wing-coverts clear buff or ochraceous- 
buff, the inner webs of remiges broadly edged with pinkish vinaceous- 
buff or vinaceous-cinnamon; maxilla dark brown or blackish brown, 
whitish (in dried skins) along tomium; mandible pale horn color or 
dull whitish in dried skins (light bluish gray in life); iris white or 
@ True T. doliatus is confined to Cayenne, Surinam, and British Guiana (see p. 36). 
b Twenty-nine specimens. 
