3. OCEAXODKOMA. 34^ 



(]883); Saund.ed. YarreWs Brit. Birds, iv. p. 392 (1884); id. 



litis, 1884, p. 392 ; Baird, Brav. S,- Itidt/jv. Water-Birds N. Am. 



ii. p. 407 (1884) ; Merriam, Bull. U.S. Nut. Miis. no. 29, p. 283 



(1885); Turner, Auk, ii. p. 158 (1885); id. Pr. U.S. Nat. Mm. 



Tiii. p. 253 (lt;8o) ; Ussher, Zool. 1886, p. 367 ; A. 0. U. Check-l. 



N. Am. Birds, p. 104 (1880). 

 Thalassidroma leucorrhoa, Det/l. ^- Gcrhe, Ois. Eur. ii. p. 387 (1867) ; 



Doderl. Avif. Sicil. p. 230 (1869) ; Dresser, Birds Eur. riii. p. 497, 



pi. 613 (1874) ; Irby, Birds Gihr. p. 217 (1875); Maynard, Birds 



E. N. Am. p. 490 (1879) ; Sivinhurne, Pr. Ii. Phijs. Soc. Edinb. 



viii. 1883, p. 04 ; Bi.von, Ibis, 1885, pp, 95, 361 ; ArSvalo, Aves 



de Esj). p. 409 (1887). 

 Oceanodroma leucorrhoa, Sfejn. Bull. U.S. Nat. Mus. no. 29, p. 97 



(1885); id. Pr. U.S. Nat. Mm. x. p. 125 (1887); Blakist. Pr. 



U.S. Nat. 3Ius. ix. p. 655 (1886) ; Bidffw. Man. N. Am. Birds, 



p. 71 (1887) ; Sound. Ma7i. Brit. Birds, p. 725 (1889) ; Eutcher,. 



Auk, vi. p. 131 (1889) ; Morris, Auk, vi. p. 340 ; C/iatnberlain, 



Auk, vi. p. 215; Palmer, Pr. U.S. Nat. Mus. xiii. p. 257 (1890) ; 



Tacz. Mem. Ac. Imp. St. Petersb. xxxix. p. 1066 (1893). 

 Fork-tailed Stormy Petrel, Nutt. Man. Water-Birds, p. 326 (1834). 

 The Fork-tailed I'etrel, Yarrell, Brit. Birds, iii. p. 520 (1843). 



Adult male. Sooty-black ; head and throat slightly plumbeous, the 

 latter as well as the forehead a little paler : greater and median wing- 

 coverts pale sooty-brown ; longer tail-coverts white, with dark shafts 

 and a narrow dark edge, the shorter coverts sooty with white 

 margin ; under surface sooty-brown ; under tail-coverts whitish at 

 the base ; rectrices sooty, with the bases of the shafts white : biU 

 and feet black. Total length about 8-5 inches, wing 6 ; tail,, 

 central rectrices 2*4, lateral 3-3 ; tarsus 0-92, middle toe 0-98. 



Female. Similar to the male. 



Younrj, Covered with sooty down. 



The specimen from the Kurile Islands has some white at the base 

 of the outer rectrices and along the outer web of the outermost 

 feather, but it does not differ otherwise from the Worth- Atlantic 

 bird. 



Hah. Seas of the Northern Hemisphere. 



a. 6 ad. ; h. 2 Dun, St. Ivilda, June 10, 1884 Seebobm Coll. 

 ad. sk. {C. IJi.imi). 



c. Ad. St. St. Kilda. Old Coll. 



d. d ad. sk. Lincolnshire coast, Nov. 10. Seebobm Coll. 



e. 2 ad. sk. Thames Valley, Crossness. H. "\^'hitely [C.]. 

 /-:/. Ad. sk. Grand Menan, June [H. Her- Salvin-Godman Coll, 



7-ick). 

 k. Ad. sk. New Bruuswick. Salvin-Godman Coll. 



I. cJ ad. sk. Green 1., New Bruns^\-ick (J. Salvin-Godman ColL 



H. Batty), 

 m-o, Ad.sk. Bay of Fundy, N.B. {G. A. Salvin-Godman ColL 



Boardman). 

 p. Ad. sk. Nova Scotia. Old Coll. 



q. Ad. sk. Newfoundland (C H. Mer- Salvin-Godman ColL 



riant). 

 r. Pull.sk. CascoBay,Maine(TT'.^?-«rsto-). Salvin-Godman Coll. 



«. 2 ad. ek. Bermuda, May (C. H. Mer- Salvin-Godman CoU. 



nam). 



