28 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 



tomium nearly straight, conspicuously notched subterminally ; 

 gonys moderately convex, strongly ascending terminally, prominent 

 basally; mandibular tomium straight or slightly concave toward 

 tip, slightly notched subterminally; width of bill at frontal antise 

 about three-fourths its depth at same point. Nostril exposed, 

 broadly longitudinally oval, with distinct internal tubercle. Rictal 

 bristles obvious but small, the loral feathers with thickened bristly 

 shafts. Wing moderate or rather short, excessively rounded, with 

 longest primaries very little if any longer than secondaries; second, 

 third, and fourth, or third, fourth, and fifth primaries longest and 

 equal, tenth (outermost) about three-fifths as long as longest, the 

 ninth very much, eighth slightly, shorter than secondaries. Tail 

 three-fourths to more than five-sixths as long as wing, much rounded 

 (graduation about equal to distance from nostril to tip of maxilla), 

 the rectrices (12) rather broad, rounded terminally. Tarsus more 

 than one-third as long as wing, distinctly scutellate, the elongate- 

 quadrate plantar scutella in two longitudinal series; middle toe, with 

 claw, decidedly shorter than tarsus; outer toe, without ci'aw, reach- 

 ing to or slightly beyond middle of subterminal phalanx of middle 

 toe, the inner toe slightly but decidedly shorter; hallux about as 

 long as inner toe but much stouter; basal phalanx of middle toe 

 united for most of its length to outer toe, for about half its length to 

 inner toe; claws moderately developed, that of the hallux decidedly 

 shorter than the digit. Plumage blended, very full, that of rump 

 much developed and lax; pileum with a conspicuous decumbent 

 crest of distinctly outlined, rather narrow feathers. 



Coloration. — Under parts (except, sometimes, thighs and under 

 tail-coverts), including malar region, immaculate white; upper parts 

 black in adult males, rufous-brown or chestnut in adult females, the 

 wing-coverts tipped with white (primaries sometimes edged with 

 white), the tail sometimes transversely spotted with white." 



Range. — ^Southern Mexico to Argentina. (About four species and 

 subspecies.) 



TARABA TRANSANDEANA TRANSANDEANA (Sclater). 



HOLLAND'S ANTSHRIKE. 



Adult male. — Entire upper parts, including sides of head (down 

 to upper margin of malar region) and sides of neck, black, relieved 

 by conspicuous white tips to all the wing-coverts'* and white edges 

 to alula, the terminal portion of remiges duller blackish or more 



" Thamnophilns rohdei Berlepsch, of Paraguay, referred to this group by Dr. Sclater, 

 has the under parts black in the adult male with the breast varied with white. This 

 species I have not seen and therefore do not know whether it is really a member of 

 this genus or not. 



b Sometimes a few of the primaries are narrowly edged with white. 



