- cc. Slightly darker, with black squamations of upper parts heavier; averaging slightly smaller, except bill and middle toe (wing averaging 111.7, tail 41, culmen 27.2, tarsus 48.2, middle toe 25.3). (Costa Rica and western Panamá.)
- bb. Paler; under parts ochraceous, deepening into brownish tawny on chest; smaller, except tail and bill (averaging: wing 109.5, tarsus 40.4, middle toe 20.8). (Southeastern Mexico.)
aa. Coloration paler, the general color of under parts dull buff to clay color; black squamations of upper parts much narrower; gray of hindneck, etc., much duller, much more restricted, the whole forehead (sometimes crown. also) light olive-brownish; size averaging larger (average measurements: wing 116.5, tail 48.3, culmen 27.3, tarsus 51.8, middle toe 26.5). (Southwestern Mexico.)
GRALLARIA GUATIMALENSIS GUATIMALENSIS Prévost and Des Murs.
GUATEMALAN ANTPITTA.
Adults (sexes alike?).[1] — Pileum and hindneck slate color or slate- gray, the feathers margined with black, producing a squamate effect; back, scapulars, and rump olive, the feathers rather broadly margined with black; upper tail-coverts and tail russet-brown to chestnut; wings olive or olive-brown, the remiges more russet brown, lighter on primaries, the outer of which have their outer webs much paler (nearly wood brown) terminally; greater coverts edged with russet, sometimes (also occasionally the middle coverts) with more or less distinct terminal spots of tawny; lores dull whitish, "sometimes slightly intermixed with dusky or grayish; a narrow line of white on posterior half (more or less) of upper eyelid; the posterior portion of lower eyelid also whitish; suborbital and auricular regions dark olive with narrow but distinct shaft-streaks of whitish or pale tawny; malar region whitish, buffy or tawny; chin and upper throat olive-brown, suffused, more or less strongly, with tawny-ochraceous, sometimes mixed somewhat with dusky, the feathers with pale ochraceous or buffy shaft-streaks; lower throat tawny or tawny- ochraceous to ochraceous-white, usually immaculate but sometimes more or less broken by dusky spots or bars, usually bounded posteriorly by a more or less distinct narrow semicircular line of dusky or sooty blackish spots; rest of under parts plain bright tawny or tawny-ochraceous, slightly paler on abdomen, deeper on sides and flanks; under wing-coverts immaculate tawny-ochraceous, the inner webs of remiges broadly edged with a paler tint of same or ochraceous- buff; maxilla dusky horn color, paler toward culmen; mandible pale brownish (in dried skins); legs and feet horn brownish (in dried skins).
- ↑ While considerable variations in color-pattern are observable among specimens of all the forms of this species, in none of them do I find any differences that can be corellated with difference of sex — provided, of course, the latter has in all cases been correctly determined.