586 MANUAL OF PHILIPPINE BIRDS. 



Bill acrocephaline ; upper mandible dark brown, under mandible paJe; 

 legs, feet, and claws brown; third and fourth primaries longest; second 

 primary usually intermediate in length between the sixth and fifth, 

 sometimes slightly shorter than the sixth; bastard [first] primary 

 measuring 12.7 to 15.2 mm. Length of wing, male, 72.1 to 68.5; female, 

 68.5 to 66; tail, male, 53.3 to 49.5; female, 49.5 to 45.7; culmen, 12.9 

 to 13.9; tarsus, 20.3. 



"The changes of plumage in this species are similar to those of the 

 preceding species, but at all seasons of the year the general color of 

 the under parts is much paler in color in P. borealis (Blasius). The 

 smaller size and smaller first primary of the latter species serve, however, 

 to distinguish even birds of the year from the present species, though 

 they approach each other very closely." (Sivinhoe.) 



The yellow willow warbler is undoubtedly much rarer in the Philip- 

 pines than the next preceding species, but upon a careful examination of 

 available material I find it necessary to refer to this species a number of 

 specimens which were previously recorded as A. borealis. These changes 

 will be found in the list of localities under each species. 



570. ACANTHOPNEUSTE LUGUBRIS (Blyth). 

 MOURNING WILLOW WARBLER. * 



Phyllopneustc lugubris BLYTH, Ann. & Mag. Nat. Hist. (1843), 12, 98. 

 Phylloscopus luyubris SEEBOHM, Cat. Birds Brit. Mus. (1881), 5, 48. 

 Acaiithopneuste lugubris SHARPE, Hand-List (1903), 4, 217; MCGREGOR 

 and WORCESTER, Hand-List (1906), 90. 



Basilan (Steere Exp.) ; Mindanao (Steei'e) ; Samar (Steere Exp.). Western 

 China to Chuan-che, eastern Himalayas; in winter to eastern Bengul and 

 Burmese provinces. 



"Coloration. Very similar to A. magnirostris, but rather darker and 

 smaller, and differing also in the proportions of the primaries. Upper 

 mandible dark brown, lower one yellowish, somewhat dusky on the 

 terminal half; iris brown; mouth yellow; legs brown; claws horn-color. 

 Length, 127; tail, 53; wing, 66; tarsus, 19; bill from gape, 15.7; the 

 second primary is intermediate in length between the ninth and tenth, 

 and sometimes equals the tenth; the first primary is very long, being 

 sometimes 20.3 mm. in length." (Gates.) 



I have not seen a full description of this species ; it is usually compared 

 with A. magnirostris, but its very long first primary would seem to be a 

 character sufficient to prevent its being mistaken for either of the other 

 species .found in the Philippine Islands. 



Genus HOKORNIS Hodgson, 1845. 



Bill short and stout with a small notch near the tip ; rictal bristles few 

 and well developed, a few short bristles in front of them ; some feathers of 

 forehead and chin with long bristle-like shafts; wing moderate to short, 



