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. ridgivayi, with pileum often but little paler on 

 forehead than on occiput. (Galapagos Islands.) 



Anous stolidus galapagensis (p. 551). 



ANOUS STOLIDUS STOLIDUS (Linnaeus). 



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- 

 ciliaiy 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 primaiy 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 

 gi-ay or even sooty brown, paler (sometimes dull white) on abdomen. 



Nouv. Guinea, 1776, 125, pi. 85). — A[nous] pileatus Gray, Gen. Birds, iii, 1846, 661; 

 Pelzeln, Reis. 'Novara,' Vog., 1865, 155, 1Q2.— Anous pileatus Sahin and Godman, 

 Biol. Centr.-Am., Aves, iii, 1903, 413, part (Pacific Ocean, from Philippine Islands 

 to China and Laysan). — Anous stolidus pileatus Ilartert, 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 Cm., ii, 1790, 805. — Thalasseus 

 philippina Boie, Isis, 184'4, 182. 



(4) Anous stolidus rousseaul. Anous rousseaui Hartlaub, Beitr. Orn. Madagascar, 

 1861, 86. — Anous stolidus rousseaui Mathews, Birds Australia, Li, pt. 4, Nov. 1, 1912, 

 411 (Madagascar; Mauritius; Seychelles; etc.). 



(5) Anous stolidus plumbeigularis. Anous plumheujularis Sliarpe, Pliil. Trans., 

 clxviii, 1879, 468 (Red Sea; coll. Br. Mus. ).—^nous stolidus plumbeigularis Mathews. 

 Birds Australia, ii, pt. 4, Nov. 1, 1912, 411 (Red Sea). 



