704 MANUAL OF PHILIPPINE BIRDS. 
717. DICRURUS STRIATUS Tweeddale. 
SOUTHERN DRONGO. 
Dicrurus striatus TweeppaiieProc. Zool. Soc. (1877), 545; Challenger 
Report, Zool. (1881), 2, pt. 8, pl. 4; WHITEHEAD, Ibis (1899), 102 
(habits) ; McGrecor and Worcester, Hand-List (1906), 107. 
Basilan (Everett, Steere Exp., Bourns & Worcester, McGregor); Bohol (Mc- 
Gregor); Leyte (Steere Bup., Whitehead); Mindanao (Murray, Everett, Koch 
& Schadenberg, Steere Exp., Bourns & Worcester, Goodfellow, Celestino) ; Nipa 
(Hverett); Panaon (Hverett); Samar (Steere Hxp., Bourns & Worcester, White- 
head). 
Adult.—Similar to Dicrurus balicassius, but mantle, back, and rump 
velvety blue-black with a very slight gloss; feathers of crown scale-like 
and glossy; long lanceolate feathers on sides of neck dark glossy green ; 
under parts blue-black; throat and chest spangled with glossy steel-blue. 
A male from Bohol measures: Wing, 134; tail, 103; depth of fork, 6; bill 
from notril, 22; depth of bill at nostril, 10; tarsus, 22. A female from 
Basilan, wing, 135; tail, 112; bill from nostril, 21; depth of bill at 
nostril, 10; tarsus, 21. y 
In general appearance the southern drongo resembles a Chibia, but 
the tail is even less forked than in D. balicassius. 
This species was very abundant near Isabela, Basilan. A female, 
taken January 15, differs from the usual specimens in having the 
feathers of lower breast and abdomen tipped with gray. A pensile nest 
of this species, found on March 12, is composed of plant fibers. Its 
inside diameter is 76 mm. and its inside depth is 50 mm. ‘The three 
eggs are light cream, almost white, in color, decorated with faint spots 
of pale lilac and brighter spots of reddish brown, mostly near the larger 
end of the egg. The eggs measure: 28.9 by 19.3; 29.2 by 19; 29.4 by 
19.5. 
“Habits like those of D. balicassius. Abundant in Mindanao and 
Basilan. Two males from the latter island average: Length, 250; wing, 
130; tail, 116; culmen, 32; tarsus, 22; middle toe with claw, 23. Three 
females, length, 250; tail, 113; wing, 152; culmen, 34; tarsus, 21; 
middle toe with claw, 23.6. Iris, legs, feet, and nails black; bill black, 
except tip of lower mandible, which is often white.” (Bourns and 
Worcester MS.) 
718. DICRURUS SULUENSIS Hartert. 
SULU DRONGO. 
Dicrurus suluensis Hartrert, Novit. Zool. (1902), 9, 441; McGrecor and 
Worcester, Hand-List (1906), 107. 
Lapoc, off Siasi (Bartsch) ; Sulu (Guillemard, Bourns & Worcester). 
“The Sulu form differs from the Sula bird in smaller size (wings 
and tail) and somewhat smaller glossy spangles on the breast and from 
