_Anous pileatus_ Pelzeln, Reise "Novara," Vögel, 1865, pp. 155, 162 (Puynipet = Ponapé). _Anous stolidus pileatus_ Hartert, Novit. Zool., 7, 1900, p. 9 (Ruk); Wetmore, in Townsend and Wetmore, Bull. Mus. Comp. Zoöl., 63, 1919, p. 183 (Kusaie); Kuroda, in Momiyama, Birds Micronesia, 1922, p. 49 (Guam, Saipan, Pelew, Mortlock, Ruk, Wolea, Nukuoro, Ponapé, Kusaie, Marshalls); Hand-list Japanese Birds, rev., 1932, p. 195 (Koror, Urukthapel, Angaur, Saipan, Guam, Wolea, Truk, Mortlock, Lukunor, Nukuoro, Ponapé, Kusaie, Jaluit, Mille, Aurh, Wotze); Bryan, Guam Rec., vol. 13, no. 2, 1936, p. 24 (Guam); Yamashina, Tori, 10, 1940, p. 678 (Assongsong, Babelthuap); Hand-list Japanese Birds, 3d ed., 1942, p. 219 (Saipan, Assongsong, Guam, Babelthuap, Koror, Urukthapel, Peliliu, Angaur, Wolea, Truk, Mortlock, Lukunor, Nukuoro, Ponapé, Kusaie, Taluit, Mille, Aurh, Wotze); Borror, Auk, 1947, p. 417 (Agrihan); Baker, Smithson. Misc. Coll., vol. 107, no. 15, 1948, p. 56 (Rota, Guam, Peleliu, Ngabad, Ulithi, Truk). _Anous stolidus unicolor?_ Ridgway, Bull. U. S. Nat. Mus., 50, pt. 8, 1919, p. 547 (Guam). TABLE 21. MEASUREMENTS OF _Anoüs stolidus_ OF THE PACIFIC AREA ======================================+=====+=========+=========+======== | | | | Exposed LOCATION | No. | Wing | Tail | culmen --------------------------------------+-----+---------+---------+-------- _Anoüs stolidus ridgwayi_ | 18 | 278 | 158 | 41 Isabella, Cocos, Clipperton Islands | | 260-295 | 147-166 | 38-42 | | | | _Anoüs stolidus galapagensis_ | 11 | 277 | 151 | 40 Galapagos Islands | | 274-282 | 142-160 | 38-42 | | | | _Anoüs stolidus pileatus_ | 35 | 281 | 162 | 42 Hawaiian Islands: Nihoa to Midway | | 268-299 | 149-176 | 38-40 | | | | Wake Islands | 8 | 278 | 159 | 41 | | 273-285 | 152-170 | 39-43 | | | | Mariana Islands: Guam, Rota | 12 | 280 | 167 | 41 | | 275-288 | 159-187 | 39-43 | | | | Palau Islands | 9 | 278 | 161 | 41 | | 268-283 | 155-166 | 39-42 | | | | Caroline Islands | 41 | 282 | 164 | 42