ACROCEPHALUS. 569 
550. LOCUSTELLA LANCEOLATA (Temminck). 
STREAKED GRASSHOPPER WARBLER, 
\ 
Sylvia lanceolata TEMMINCK, Man. d’Orn. (1840), 4, 614. 
Locustella lanceolata SrEBouM, Cat. Birds Brit. Mus. (1881), 5, 118; 
OaTEsS, Fauna Brit. India Birds (1889), 1, 354; SHarpE, Hand-List 
(1903), 4, 186; OaTes and Ret, Cat. Birds’ Eggs (1905), 4, 180, pl. 
9, fig. 9; McGrecor and WorceEsTER, Hand-List (1906), 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-coverts similar to back; tail nearly uniform brown; sides of 
head and ear-coverts brown; a yellowish buff line above, and another 
below, eye; cheek and jaw buff, traversed by a narrow blackish brown 
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, 53; 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 ZL. straminea. The 
majority of the birds are densely streaked from the chin to the tail- 
coverts, 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, 1ST. 
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. 
