568 MANUAL OP PHILIPPINE BIRDS. 



gray ; a distinct line over lores, eye, and ear-coverts ashy gray ; lores and 

 upper ear-coverts dusky; chin and fore throat white, becoming ashy or 

 drab-gray on cheeks, ear-coverts, sides of throat, and breast; breast ashy 

 gray, becoming white on middle of abdomen; sides, flanks, and thighs 

 light olive-brown; crissum yellowish olive-brown. Wing, 76; tail, 68; 

 outermost rectrix, 45; culmen from base, 20; bill from nostril, 11 ; tarsu>. 

 26 ; middle toe with claw, 24. 



In winter the upper parts, especially the head, are lighter; the 

 superciliary stripe, cheeks, and under parts are washed with buff and the 

 gray is entirely obscured. The male and female are very similar if not 

 identical in colors. A female from Calayan in fresh winter-plumage 

 measures: Wing, 72; tail, 66; culmen from base, 19; bill from nostril. 

 11 ; tarsus, 26. A female in somewhat worn plumage, wing, 72 ; tail, 68 ; 

 culmen from base, 19; bill from nostril, 11; tarsus, 25. 



549. LOCUSTELLA OCHOTENSIS ( Middendorf ) . 

 YELLOW GRASSHOPPER WARBLER. 



Sylvia (Locustella) ochotensis MIDDENDORF, Sib. Reise (1853), 2, 185. 



Locustella ochotensis SEEBOHM, Cat. Birds Brit. Mus. (1881), 5, 113; 

 WHITEHEAD, Ibis (1899), 210 (migration); SHABPE, Hand-List (1903), 

 4, 186; MCGREGOR and WORCESTER, Hand-List (1906), 87. 



Basilan ( McGregor ); Batan (McGregor)-, Bohol (McGregor); Calayan (Mc- 

 Gregor) ; Luzon (McGregor) ; Marinduque (Steere Exp.) ; Mindanao (Goodfellow) ; 

 Mindoro ( Whitehead) ; Romblon (McGregor). Kurile Islands, northeastern 

 Siberia, Greater Sunda Islands, Kamtchatka, Japan; Borneo in winter. 



Adult. Above russet-brown ; feathers of head and back with darker 

 centers; lores and a line over eye to nape ashy; cheeks and ear-coverts 

 brown with a buff wash; jaws white; loral and malar feathers with 

 shafts extending beyond the webs, the produced portions black; sides of 

 the neck brown; under parts white; sides, flanks, thighs, and crissum 

 buff v brown ; a faint buff wash across fore breast ; wings and tail similar 

 to the back, the latter with obsolete, narrow bars on upper surface; 

 rectrices dark gray below, each with a dark bar just anterior to the 

 whitish tip. Upper mandible dusky, lower mandible light flesh-color, 

 dusky at tip; legs and nails pale flesh-color. Length, about 165; male, 

 wing, 74; tail, 60; culmen from base, 16; bill from nostril, 9; tarsus, 24; 

 middle toe with claw, 23. Female, wing, 65; tail, 54; culmen from base, 

 15 ; bill from nostril, 9 ; tarsus, 22 ; middle toe with claw, 21. 



Young. In young birds the sides of the head and the entire under 

 parts are strongly suffused with yellowish buff. 



