distinctly operculate. Rictal bristles absent, and feathers of chin, etc., without terminal setæ. Wing long and pointed, the longer primaries exceeding secondaries by much more than length of exposed culmen; sixth, seventh, and eighth primaries longest, the tenth (outermost) two-thirds to nearly three-fourths as long as the longest, the ninth much longer than secondaries. Tail nearly as long as wing, graduated for more than one-fourth its length, the rectrices (12) abruptly and excessively acuminate terminally, with slender tip conspicuously protruded. Tarsus very much longer than culmen, at least one-fourth (but less than one-third) as long as wing, distinctly scutellate; middle toe, with claw, as long as tarsus; outer toe, without claw, reaching to much beyond middle of subterminal phalanx of middle toe, the inner toe decidedly shorter; hallux as long as outer toe; middle toe united to outer toe by the whole of its first and part of its second phalanx, to inner toe for greater part of its first phalanx; claws rather large, strongly curved, sharp, that of the hallux decidedly shorter than the digit.
Coloration. — Upper parts (except, sometimes, pileum and hindneck) uniform bright cinnamon-rufous or chestnut-rufous; under parts similar but paler, with whitish throat and spots or streaks on lower throat or chest, or else under parts of body with conspicuous guttate spots of buffy wliite margined with black. Sexes alike.
Range. — Costa Rica to Venezuela, Bolivia, and Ecuadór. (Four species.[1])
MARGARORNIS RUBIGINOSA Lawrence.
COSTA RICAN MARGARORNIS.
Adults (sexes alike). — Pileum plain chestnut-brown, usually paler and more buffy brown on forehead and passing into buffy brown or raw-umber on hindneck; rest of upper parts, including wings and tail, plain deep cinnamon-rufous or rufous-chestnut, the outer webs of two or three outermost primaries and most of inner webs of all the remiges (except tertials) deep grayish brown; a superciliary stripe of buff, indistinct or obsolete above lores; auricular, suborbital, and malar regions plain wood brown or tawny-ohve; chin and throat dull white or yellowish white; rest of under parts light buffy cinnamon medially deepening into rufous-cinnamon laterally and on under tail-coverts, the feathers of median portion of chest (sometimes of breast also) with more or less distinct small spots of pale buff, these usually margined posteriorly by a very narrow line of black, the extreme upper chest with ground color paler, and, together with extreme lower throat usually with more or less distinct narrow bars of grayish or dusky; under wing-coverts pale buffy, mottled or
tinged with light cinnamon-brownish, and sometimes more or less
- ↑ I have not seen M. squamigera (D'Orbigny and Lafresnaye), from Bolivia.
