546 BULLETIN 50, UNITED STATES NATIONAL MUSEUM. 
aa, General color darker and less brown; pileum darker gray, becoming less dis- 
tinctly (sometimes not at all) whitish anteriorly. 
b. Intermediate in coloration between A. s. stolidus and A. s.galapagensis. (Pacific 
coast of Mexico and adjacent islands.)...... Anous stolidus ridgwayi (p. 550). 
bb. Decidedly darker than A. s. ridgwayi, with pileum often but little paler on 
forehead than on occiput. (Galapagos Islands.) 
Anous stolidus galapagensis (p. 551), 
5 ANOUS STOLIDUS STOLIDUS (Linnezus). 
NODDY. 
Adults (sexes alike).—General color plain deep sooty brown 
(nearly clove brown), the under parts somewhat lighter (nearly 
sepia), paler and more grayish on hindneck, where passing, anteriorly, 
through pale gray into white or grayish white on forehead and super- 
ciliary region; a bar or narrow crescent of white on lower eyelid; 
lores and narrow space immediately above eye black or sooty black, 
in abrupt and strong contrast with white or grayish white of fore- 
head and superciliary region, the sides of head and neck, chin, and 
throat sooty brownish but of a more grayish cast (sometimes nearly 
dark plumbeous, especially in fresh plumage) than the general color; 
remiges and primary coverts darker sooty brown, the primaries and 
their coverts approaching sooty black; axillars and under wing- 
coverts deep brownish gray; bill black; iris dark brown; legs and 
feet brownish (said to be dull brownish red or reddish brown, with 
ochraceous webs, in life). 
Young.—Essentially like adults but general color lighter sooty 
brown and pileum much less distinctly gray, with white, or very pale 
gray restricted to a narrow superciliary line, sometimes continued 
around lateral and anterior edges of forehead. = 
Downy young.—Immaculate dull grayish white to pale brownish 
gray or even sooty brown, paler (sometimes dull white) on abdomen. 
Nouv. Guinea, 1776, 125, pl. 85).—A[nous] pileatus Gray, Gen. Birds, iti, 1846, 661; 
Pelzeln, Reis. ‘ Novara,’ Vég., 1865, 155, 162.—_Anous pileatus Salvin and Godman, 
Biol. Centr—Am., Aves, iii, 1903, 413, part (Pacific Ocean, from Philippine Islands 
to China and Laysan).—Anous stolidus pileatus Hartert, Novit. Zool., vii, 1900, 9; 
Mathews, Birds Australia, ii, pt. 4; Nov. 1, 1912, 411 (Philippines; Liu Kiu Islands; 
China Sea).—{Sterna] philippina Latham, Index Orn., ii, 1790, 805.—Thalasseus 
philippina Boie, Isis, 1844, 182. 
(4) Anous stolidus rousseaui. Anous rousseaut Hartlaub, Beitr. Orn. Madagascar, 
1861, 86.—Anous stolidus rousseaut Mathews, Birds Australia, ii, pt. 4, Nov. 1, 1912, 
411 (Madagascar; Mauritius; Seychelles; etc.): - ' 
(5) Anous stolidus plumbeigularis. Anous plumbeigularis Sharpe, Phil. Trans., 
elxviii, 1879, 468 (Red Sea; coll. Br. Mus.).— Anous stolidus plumbeigularis Mathews, 
Birds Australia, ii, pt. 4, Nov. 1, 1912, 411 (Red Sea). 
