128 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
HYLOPHYLAX NZVIOIDES (Lafresnaye). 
SPOTTED ANTBIRD. 
Adult male.—Pileum and hindneck grayish brown or olive-brown, 
passing into gray laterally and on forehead, the feathers usually with 
darker shaft-streaks and terminal margins; back plain chestnut, the 
feathers extensively white basally; scapulars, rump, and upper tail- 
coverts plain russet-brown, the first tinged with chestnut; wing- 
coverts black, the lesser with terminal spots of white (those along 
anterior margin mostly white), the middle and greater coverts very 
broadly tipped with cinnamon-rufous, forming two very conspicuous 
bands; remiges dull black, the outer web and tip of tertials largely 
cinnamon (more or less deep) or dull cinnamon-rufous, the sec- 
ondaries and primaries with outer half or more of outer web light 
brown or grayish brown; tail grayish brown (deep drab or broccoli 
brown to sepia), the rectrices tipped with pale cinnamon (some- 
times whitish on outermost) and crossed by a band (more or less 
broad) of dull black; sides of head plain dull slate-gray or slate 
color, like superciliary region and forehead; malar region, chin, and 
throat uniform black; rest of lower parts white, passing into buffy 
gray on flanks and pale brownish buff on under tail-coverts, the latter 
sometimes brownish beneath surface; upper breast and anterior 
portion of sides heavily spotted with black, separating the immaculate 
white jugular and pectoral areas; bill black, the mandible sometimes 
more brownish; legs and feet light horn color (in dried skins); length 
(skins), 96-113 (106); wing, 61-65.5 (63.1); tail, 32-36 (35); culmen, 
16-17.5 (16.7); tarsus, 21.5-23 (22.4); middle toe, 13.5-16 (14.5).2 
Adult female.—Above much as in adult male, but pileum and hind- 
neck decidedly browner (deep broccoli brown to prouts brown), back 
duller chestnut, rump and upper tail-coverts more rufescent brown, 
and markings on larger wing-coverts and tertials tawny or ochraceous 
instead of cinnamon-rufous; under parts very different, however, the 
chin and throat white or buffy, like chest, upper breast spotted (less 
heavily) with olive or grayish instead of black, and whole sides and 
flanks olive or buffy olive; mandible dull whitish (in dried skins); 
length (skins), 98-114 (108); wing, 59.5-64.5 (62.1); tail, 30-35 
and other excellent structural characters, while the fourth, fifth, and sixth I also 
remove as a distinct genus, Myrmoborus Cabanis and Heine. (See p. 14.) 
There is much difference in the form of the bill between the three species of Hylo- 
phylax which I now have before me, H. nevia having this member very broad and very 
much depressed basally, while that of H. pacilonota is much narrower, less depressed, 
and with the base of the gonys more prominent, H. nxvioides being, however, inter- 
mediate between these extremes. 
@ Seventeen specimens. 
