702 MANUAL OF PHILIPPINE BIRDS. 



mm. on outermost pair and reduced to a mere trace on the middle pair ; 

 shafts of rectrices black above, brown below. A male measures : Wing, 

 111; tail, 75; culmen from base, 23; bill from nostril, 16; tarsus, 20. 



Female. Head, neck, sides of neck and ear-coverts black, streaked 

 with olive-green; back yellow, but not so bright as in the male; jaw, 

 chin, throat, and chest cinereous with whitish streaks; breast and abdomen 

 like the male, but less heavily streaked with black; primaries more 

 widely edged with pale gray than in the male; secondaries and tertials 

 broadly edged with olive-green; primary-coverts and alula edged with 

 gray; exposed edges of all the secondary-coverts olive-green; rectrices 

 heavily washed with olive-green on outer webs ; both webs of central pair 

 nearly all olive-green; shafts yellow below. A female measures: Wing, 

 109; tail, 76; culmen from base, 23; bill from nostril, 16.5; tarsus, 21. 



"Eight males average: Length, 197; wing, 114; tail, 77; culmen, 25; 

 tarsus, 20.5; middle toe with claw, 22.3. Five females, length, 192; 

 wing, 106; tail, 73; culmen, 23; tarsus, 20.5; middle toe with claw, 21.-V 

 Iris deep red; legs and feet slaty blue, nails blackish; bill light reddish 

 brown." (Bourns and Worcester MS.) 



Family DICRTJRID^. 



Bill strong, culmen ridged and strongly curved; cutting edge curved 

 with a notch near the tip ; nostrils hidden by many soft, antrorse, frontal 

 plumes, the anterior of which have long bristle-like shafts ; rictal bristles 

 long and stiff; wing long; first primary more than one-half the second, 

 the latter much less than third; fourth and fifth practically equal and 

 longest; tail long to very long, slightly to deeply forked; rectrices ten, 

 the two outer pairs curved outward near the tips. Legs and feet stout : 

 tarsus slightly longer than bill from nostril; bill, legs, and nails black 

 in all the species. 



Genera. 



a\ Plumage mostly, or entirely, black; upper parts glossed with green or blue. 



6 1 . Tips of outermost rectrices not curved upward; tail nearly square. 



Dicrurus ( p. 702 ) 



6 2 . Tips of outermost rectrices curved upward, the webs more or less rotated 



about the shaft; tail decidedly forked Chibia (p. 705) 



a 2 . Plumage almost entirely gray and cinereous, with neither blue nor green gloss ; 

 tail deeply forked Bhuchanga (p. 708) 



Genus DICKURUS Vieillot, 1816. 



Wing much longer than tail ; tail slightly forked ; rectrices broad, the 

 outermost with very little if any upward curve at tip. Plumage mostly, 

 or entirely, black, glossed with blue or green. 



