502 MANUAL OF PHILIPPINE BIRDS. 
474. IRENA TWEEDDALI Sharpe. 
TWEEDDALE’S FAIRY BLUEBIRD. 
Trena tweeddalii SHARPE, Cat. ©... Brit. Mus. (1877), 3, 268; Trans. Linn. 
Soc. 2d. ser. Zool. (1877), 1, 333, pl. 51, fig. 1; McGrecor and Wor- 
CESTER, Hand-List (1906), 79. 
Irena tweeddalet SHARPE, Hand-List (1901), 3, 309. 
Balabac (?*); Calamianes (Bourns € Worcester) ; Palawan (Steere, Lempriere, 
Whitehead, Platen, Steere Exp., Bourns & Worcester, Celestino, White). 
Male.—Crown, nape, hind neck, entire back, rump, upper and under 
tail-coverts, lesser and median wing-coverts, and tips of inner greater 
coverts light turquoise-blue; rest of plumage, including forehead, lores, 
a wide line over eye, and entire sides of head and neck deep black. 
Length, 240; wing, 127; tail, 99; culmen from base, 263 bill from 
nostril, 19; tarsus, 16. 
Female.—Very different from the male, being dull verditer-blue; 
feathers of rump and upper and under tail-coverts tipped with brighter 
blue; primaries dark brown; secondaries and rectrices dark brown, their 
exposed edges washed with verditer-blue. Wing, 120; tail, 99; culmen 
from base, 26; bill from nostril, 19; tarsus, 18. 
“T'weeddale’s fairy bluebird was fairly common about fruit trees in the 
forest and was found abundantly on Mount Pulgar at an elevation of 
about 750 meters. Five males from Palawan average: Length, 245; 
wing, 123; tail, 95; culmen, 31; tarsus, 17; middle toe with claw, 23. 
Four females, length, 248; wing, 122; tail, 92; culmen, 31; tarsus, 17; 
middle toe with claw, 24. Males and females from the Calamianes 
average slightly less in length. Iris red; bill, legs, feet, and nails black.” 
(Bourns and Worcester MS.) . 
Genus HYPSIPETES Vigors, 1831. 
Longest rictal bristles about one-half the length of tarsus ; nuchal hairs 
moderate in length; bill slender and compressed; a notch near tip of 
upper mandible, none in lower mandible; tarsus much less than culmen 
from base; difference between length of primaries and secondaries greater 
than length of tarsus; tail slightly rounded; plumage brown and gray, 
under parts sparsely spotted with white. 
Species. 
@. Smaller; bill and tail shorter; flanks more rufescent or fulvescent. 
Oiunsmallers forehead Cimereouss ie eee ences sees acon eaten eee fugensis (p. 503) 
Da Albarn ies ore ee a ae ee eo eae occas seems coe eer batanensis (p. 503) 
aw. Larger; bill and tail longer; flanks grayer................--.. camiguinensis (p. 504) 
* Cf. Sharpe, Hand-List (1901), 3, 309. I find no record of this Irena having 
been taken in Balabac. 
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