ACROCEPHALUS. 569 



550. LOCUSTELLA LANCEOLATA ( Temminck ) . 

 STREAKED GRASSHOPPER WARBLER. 



Sylvia hinceohila Temminck, :\ran. crOrn. (1840), 4, 014. 



Locustella lanceolata Seeboiim, Cat. Birds Brit. :Mus. (1881), 5, 118; 

 Gates, Fauna Brit. India Birds (1889). 1, '354; Sharpe, Hand-List 

 (190.3), 4, ISO; Gates and Retd, Cat. Birds' Eggs (1905), 4, 180, pi. 

 9, fig. 9; McGregor and Worcester, Hand-List (190(5), 87. 



Calayan {McGregor) ; Luzon {Heriot, McGregor). Russia, Siberia, and cen- 

 tral Asia; in winter to China, Andaman Islands, Indian Peninsula, and Burmese 

 provinces. 



Adult (sexes similar). — Above olivaceous russet-brown, each feather 

 with a wide seal-brown shaft-streak; primaries and secondaries seal- 

 brown edged with russet-brown, second primary edged with whitish; 

 secondary-covei-ts similar to back; tail nearly uniform brown; sides of 

 liead and ear-coverts brown; a yellowish buff line above, and another 

 below, eye; cheek and jaw butf, traversed by a narrow blackish browTi 

 line; under parts whitish, washed with buff on fore breast, sides, flanks, 

 and crissum; feathers of these parts more or less marked with blackish 

 brown shaft-lines. Bill dusky above, flesh-color below; legs and nails 

 pale yellowish flesh-color. Length, 120 to 125. A male from Calayan 

 measures : Wing, 57 ; tail, 45 ; culmen from base. 12 ; bill from nostril, 

 7; tarsus, 17. A female, wing. 5:3: tail. 43: culmen from base, 11; bill 

 from nostril, 7 ; tarsus, 19. 



''The streaks on the lower surface become reduced in aged birds. The 

 bird least marked in my series has a few streaks only on the middle of 

 the breast and on the flanks, with one or two faint marks on the under 

 tail-coverts. In this state it is very like the Indian L. straminea. The 

 majority of the birds are densely streaked from the chin to the tail- 

 coveris, except on the abdomen, and all these are characterized by a 

 richer tone of coloring beneath. The tail-coverts vary in the most 

 extraordinary manner. In many of the birds they are entirely unmarked ; 

 in others densely streaked, and this apparently quite independently of 

 the amount of streaking on the other parts of the lower plumage.^' 

 (Oates.) 



Genus ACROCEPHALUS Naumann, 1811. 



Bill comparatively long and stout; from three to five large rictal 

 bristles on each side of bill; wing long, flat, and pointed; first primary 

 minute, narrow, and pointed; third primary longest, second a little 

 shorter; tail decidedly rounded; tarsus and feet well developed. 



