1. SULA, 



439 



pure white feathers of the adult. These appear to be entirely 

 th^phraai""' °'^'^' ^'"^^-^'"^^ "^^« being concealed beneath 



siS'/T^T^''^?''^°T^^ ^"'^ ^^^^'^ ^PP^a^ to be perfectly 

 .imiki to those from Australia [c/. Hume, Str. F. v. p. 321 (1877)] 



. n :;, ^'T'f ^""^ Sub-tropical seas throughout the world. 



a. Juv. sk. 



i>. Ad. sk. 



c, d. 5 ad. et imm. 



sk. 

 e. Ad. sk. 



/'. Ad. sk. 

 g. Juv. sk. 

 h. Juv. sk. 



i, k. Ad. et iuv. 



sk. 

 /, m. Ad. sk. 

 n. Ad. sk. 



0. 2 juv. sk. 



/>, g-. Ad. et pull. 



sk. 

 '". (S ad. sk. 

 ■«, ^. 2 vix ad. sk. 



". Juv. sk. 



r, w, Vix ad. sk. 



or. 2 ad. sk. 



y, z. Ad. et imm. 



sk. 

 «'. 2 juv. sk. 



b'. Vix ad. sk. 



(■■', d'. (S ad. et $ 



juv. sk. 

 e',/. $ad.etpidl. 



sk. 

 y'- ? ad. sk. 



h'. 2 ad. sk. 



»", ^•'. 6 2 ad. sk. 



/'. Juv. sk. 



Half-;\loon Key, Erit. Hon- 

 duras, May 9 (O. S.). 

 Lion Hill Station, Panama 



(McClellMid). 

 Grenada, W. I., Sept. {D. W. 



Smith). 

 St. Vincent, W. I., Auo- 26 



{D. \V. S.). 

 St. Nevis, W. I. 

 Bahia, Brazil ( Wucherer). 

 Fernando Noronha, Sept. 2, 



Fernando Xoronha. 



St. Paul's Rocks, Aug. 29. 

 Salt Creek, St. Paul's Rocks! 



Dec. 2 {E. McC). 

 Boatswain-bird I., Ascension, 



April 1. 

 Boatswain-bird 1., Ascension, 



Dec. (Dr. 1). Gill). 

 Prince's I., West Africa. 

 I. of St. Thomas, Feb. 26 



{F. Newton). 

 At sea oflP the Cape of Good 



Hope. 

 Little Aden. 



Pere IMull Par, Laccadives, 



Feb. 20 (A. O. H.). 

 Penang (Dr. Cantor). 



Between Malacca and Penan j-, 

 Aug. U {W. Davison). " 

 Malacca, J uly (Dr. Maingajj). 

 Straits of Malacca, Aug. 



Flying-fish Cove, Christmas I., 

 Aug. ( C. W. Andrews). 



Tamsuy, Formosa (E. 

 Swinhoe). 



At sea, S. of Japan, April 6. 



Peel Island, May 11 (P. A. 

 Hoht). 



Mindanao, Philippine Is. 



Salvin-Godman Coll. 



Salvin-Godman Coll. 



Salvin-Godman Coll. 



Salvin-Godman Coll. 



T. Cottle, Esq. [P.]. 

 Salvia-Godman Coll. 

 Capt. Stanley, R.N 



[P.]. 

 H. N. Ridley, Esq. 



' Challenger ' Exped. 

 MacCormickBequest. 



' Challenger ' Exped. 



Dr. Frank Penrose 

 [P.]. 



Dr. Baikie [C.j. 

 Lisbon Museum [P.]. 



E. M. Langworthy, 

 Esq. [P.] 



Colonel J. W. Yer- 



bury [P.]. 

 Hume Coll. 



India Museum [P.]. 



Hume CoU. 



Tweeddale CoU. 



F. W. Styan, Esq. 



[P.]. ^ 



Dr. J. Murray [P.]. 



Seebohm CoU. 



' ChaUenger' Exped. 

 Seebohm CoU. 



Cuming CoU. 



