oe ee, ee 
TRIBURA. 571 
552. ACROCEPHALUS ORIENTALIS (Temminck and Schlegel). 
® ORIENTAL REED WARSELER. 
Seliceria turdine orientalis TmExIncK and ScHLEGEL, Fauna Japonica, 
Aves (1850), 50. 
Acrocephalus orientalis Srxsonm, Cat. Birds Brit. Mus. (1881), 5, 97; 
Watreneap, Pbis (1899), 210 (migration) ; SHarpe, Hand-List (1903), 
4, 187; Oares and Rem, Cat. Birds’ Eggs (1905), 4, 183; McGrecor 
and Worcester, Hand-List (1906), 87. 
Batan (McGregor); Bohol (McGregor); Calayan (McGregor); Cebu (Meyer, 
Steere Exp.. McGregor); Luzon (Meyer, Whitehead, McGregor); Mindanao 
(Steere Exp., Goodfellow); Mindoro (Beurns € Worcester, McGregor); Palawan 
(Platen). Japan, northern Chima, and eastern Siberia; in winter to Burmese 
provinces and the Malay Archipelago. 
Adult male and female——Above nearly uniform oliye-brown ; feathers 
of back, tail-coverts, and wing-coverts somewhat fringed with ocherous 
buff; primaries, secondaries, and rectrices dark brown, edged with olive- 
brown; second primary with a whitish outer web; below white, washed 
with buff; chin and throat nearly pure white; breast pale buif; sides, 
flanks, thighs, and crissum considerably darker; lores and spot behind 
eye brown; eyelids pale buff; a line from nostril over lores and eye to 
occiput pale*buff; feathers of lores and jaws with produced black shaft- 
tips. The obscure dusky streak on throat and the pale tips to the 
rectrices, frequently seen in Philippine specimens, are said to be character- 
istic of birds of the year. Length, about 190. A male in fresh plumage 
from Calayan measures: Wing, 85; tail, 77; culmen from base, 19; bill 
from nostril, 13; tarsus, 26. A female from Calayan, wing, 80; tail, 
68 ; culmen from base, 18; bill from nostril, 13; tarsus, 24. 
This species is resident in Bohol and specimens from that island are 
smaller than those taken in Calayan and in Luzon during migration. 
Genus TRIBURA Hodgson, 1845. 
“Bill to gape equal to head or less, straight, cylindric, compressed ; at 
base higher than broad, and having the ridge raised and keeled between 
the oval apert nares ; tip of upper mandible scarcely inclined but distinctly 
notched ; rictus smooth ; wings short and feeble but not much or equally 
gradated; first two quills conspicuously gradated, three next subequal 
and longest; tail more or less elongated and gradated throughout, rather 
cuneate than fan-shaped and somewhat rigid or worn; tarsi stout, smooth, 
longer than the mid toe. and nail; toes and nails simple, compressed. 
inner fore with its nail exceeding the outer fore, central elongate, hind 
least; nails acute.” (Hodgson.) 
