94 MANUAL OF PHILIPPINE BIRDS. 



outer web blackish, and the streak next shaft on inner web pale gray; 

 the succeeding primaries palest gray next the shafts on the outer and 

 the inner webs, the inner margins of all being pure white; tail long and 

 forked, the middle tail-feathers pale pearl-gray, the rest white; under 

 parts glossy white, with a beautiful roseate tint. Bill black; tarsi and 

 toes dark brown to black. Length, 343 ; culmen, 41 ; wing, 216 ; tail, 152 ; 

 depth of fork, 76; tarsus, 18; foot with middle toe, 23. The male ap- 

 pears to have somewhat longer streamers than the female; otherwise the 

 sexes are alike externally. . 



"Adult in winter plumage. Differs only in having less black in front 

 of the eye and on the nape. 



"Immature. Similar to the above, but there is a brownish tinge to the 

 black on the nape; wing-coverts ash-gray; a dark line along the carpal 

 joint; webs of the four outer primaries on both sides of the white shafts 

 dark ash-gray (outermost black), outer webs of the tail-streamers also 

 ash-colored. 



"Young. Forehead and crown huffish white, with black streaks which 

 become confluent on nape; feathers of mantle and tail gray, barred with 

 ash-brown and tipped with buff ; primaries with a good deal of gray, which 

 throws into strong relief their broad, white, inner margins. Bill ocher- 

 yellow, horn-colored near the tip ; toes yellowish brown. 



"Nestling. Above pale buff, spotted and streaked with black and 

 umber-brown; beneath dull drab." (Saunders.) 



Genus ANGUS Stephens, 1826. 



This genus is distinguished by its brown plumage and graduated tail- 

 feathers. 



85. ANOUS STOLIDUS (Linmeus). 



NODDY TERN. 



Sterna stolida LINN.CUS, Syst. Nat. ed. 10 (1758), 1, 137. 



Anous stolidus SAUNDERS, Cat. Birds Brit. Mus. (1896), 25, 136; BLANFORD, 

 Fauna Brit. Ind. Bds. (1898), 4, 325, fig. 73; SHARPE, Hand-List 

 (1899), 1, 137; GATES, Cat. Birds' Eggs (1901), 1, 197; MCGREGOR 

 and WORCESTER, Hand-List (1906), 21. 



Cagayan Sulu (McGregor); Palawan (Whitehead, Platen, McGregor). Tro- 

 pical and juxtatropical seas of the. world. 



"Adult male in breeding plumage. Forehead nearly white at base of 

 bill, passing on the crown into lavender-gray, which deepens on neck into 

 lead-color ; lores and orbital region black, with a faint whitish superciliary 

 streak ; upper parts chiefly dark brown ; primaries, tail-feathers, and their 

 shafts nearly black; under parts dark brown on abdomen and breast, 

 passing into deep lead-color on the throat. Bill blackish; tarsi and toes 

 reddish brown, fully webbed, webs ochraceous. Length, about 406; cul- 

 men, 53; wing, 260 to 280; tail, 152 to 178, the fourth feather from the 

 outside the longest ; tarsus, 25 ; middle toe with claw, 39. 



