128 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



HYLOPHYLAX N.EVIOIDES (Lafresnaye). 



SPOTTED ANTBIRD. 



Adult male. — Pileiim and liindneck (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 basalh^; 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 

 broadl}^ 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 flanl^s 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 

 (sldns), 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).^^ 



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, U. nsevia having this member very broad and very 

 much depressed basally, while that of n . •pacilonota is much narrower, less depressed, 

 and with the base of the gonys more prominent, II. nsevioides being, however, inter- 

 mediate between these extremes. 



o Seventeen specimens. 



