. The avifauna of Laysan and the neighbouring islands : with a complete history to date of the birds of the Hawaiian possessions . inches, wing 15-6 to 165, tail 8*5 to 9, culmen 375 to 42, tarsus 1-6to 1-8, middle toe 33 to 35. Young birds are similar to the adult above, but have the lower parts also brown, the feathersof the abdomen, however, having white bases and whitish edges, sometimes broader,sometimes narrower. The nestling is covered with pure white down. I have received some eggs from Midway Island. They are similar to those of the other Sulce,and measure 27G by 1-75, 25G by iOS, 2 3


. The avifauna of Laysan and the neighbouring islands : with a complete history to date of the birds of the Hawaiian possessions . inches, wing 15-6 to 165, tail 8*5 to 9, culmen 375 to 42, tarsus 1-6to 1-8, middle toe 33 to 35. Young birds are similar to the adult above, but have the lower parts also brown, the feathersof the abdomen, however, having white bases and whitish edges, sometimes broader,sometimes narrower. The nestling is covered with pure white down. I have received some eggs from Midway Island. They are similar to those of the other Sulce,and measure 27G by 1-75, 25G by iOS, 2 35 by 168, and 2 6 by 176 inches. AVIFAUNA OF LAYSAX. 31 The Brown Gannet, or Booby, was noticed when passing Niihau, or Bird, Island and was veryplentiful on Lisiansky and Midway Islands, hut it was altogether the rarest of the threespecies in these waters and was absent from Laysan. This species builds a nest of twigs on scrub and lays two eggs, but on Midway Island, whereonly grass is found, it builds on the ground. They are very shy and when sitting let theirnecks hang down over the edge of the nest as if they were AVIFAUNA OF 33 15. PHAETON RUBRICAUDA, Bodd. RED-TAILED TROPIC-BIRD. Le Paille-en-Queue a brins rouges, Buff. Hist. Nat. Ois. viii. p. 357 (1781) (Isle de France); Vieill. Tr. dOrn., Atl. pi. Ill (1831).Le Paille-en-Qucite de Visle de France, Daubent. PI. Enl. 979 (1783). Phaeton rubricauda, Bodd. Tabl. PL Enl. p. 57 (1783) (cx Buff. & Daubent. PI. Enl.) ; Gray, Gen. B. 663; Pcale, Expl. Exp. (1848) j Gould, B. Austral, vii. pi. 73 (1818) j HartL AViegm. Arch. 1852, pp. 127, 137; Cass. Expl. Exp. p. 395 (1858); E. Newton, Ibis, 1801, p. 180(breeding, Round I. north-east of Mauritius); G. E. Gray, Ibis, 1862, p. 250 (List B. New Zealand) ;Jcrd. B. India, iii. p. 819 (1801) ; Einsch & Hart!. Faun. Ccntralpolynes. p. 218 (1807) ; Poll. Faune Madagascar, p. 140 (18G8) (observed once, Cardagos I.); Sperling, Ibis, 180


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