148 PROCELLAKIIB.S'. 



dots scattered over the shell, but they are so few and so small 

 that they might easily escape notice. Four examples measure 

 respectively : 1-1 by -83 ; 1-05 by -78 ; -97 by '75 ; 1-04 by -73. 



3. San Benito Island, Lower Cali- A. W. Anthony, Esq. [P.]. 



fornia, 12th July. 

 1 San Benito Island, 25th July Salvin-Godman Coll. 



(A. W. Anthony}. 



Genus OCEANODEOMA, Eeiclienb. 



Oceanodroma lencorrhoa ( V.}. 



Procellaria leachii, Thien. Fartpflanz. ges. Vog. tab. xcii. fig. 9 (1845-54) ;: 



Seebohm, Brit. Birds, iii. p. 443, pi. 56 (1885). 



Thalassidroma leachii, Baedeker, Eicr Eur. Vog. tab. 55. fig. 2 (1855-63). 

 Thalassidroma leucorrhoa, Dresser, Birds JEtor.viii. p. 497 (1874) ; Diron,. 



Ibis, 1885, p. 95. 

 Cymochorea leucorrhoa, Baird, Brewer ty Hidgw. Water Birds N. Am. 



ii. p. 407 (1884). 

 Oceanodroma leucorrhoa, Seebohm, Egqs of Brit. Birds, p. 75, pi. 20. 



fig-. 7 (1896) ; Salwn, Cat. Birds B. M. xxv. p. 348 (1896) ; Sharpe, 



Hand-l. i. p. 121 (1899). 



The eggs of the Fork-tailed, or Leach's, Petrel are either of an 

 elliptical or of a broad oval form, glossless, fairly smooth and white, 

 marked at one end with a zone of minute pinkish dots and specks. 

 They measure from 1'17 to 1-3 in length, and from '9 to *1 in 

 breadth. 



1. St. Kilda (Sir W. Milner). Seebohm Coll. 



2. Dun, St. Kilda, 10th June Seebohm Coll. 



(C. Dixon). 



1. St. Kilda (Tristram Coll.). Salvin-Godman Coll. 



2. N. America (Henshaio Coll.). Salvin-Godman Coll. 

 2. Great Menan Island, Bay of Fundy, Salvin-Godman Coll. 



New Brunswick (If. E. Dresser). 



2. Bay of Fundy. Salvin-Godman Coll. 



4. Bay of Fundy, June. Seebohm Coll. 



Oceanodroma castro (Harcourt). 

 (Plate XL fig. 4.) 



Thalassidroma castro, Harcourt, Sketch of Madeira, pp. 123, 166 (1851) : 



id. Ann. $ Mag. Nat. Hist. (2) xv. p. 436 (1855). 

 Oceanodroma cryptoleucura, Salvin, Cat. Birds B. M. xxv. p. 350 (1896) : 



Grant, Ibis', 1896, p. 53 ; Dresser, Birds Eur. ix. (Suppl.) p. 395 



(1896). 

 Oceanodroma castro, Grant, Ibis, 1898, p. 314 ; Sharpe, Hand-l. i. p. 121 



(1899). 



The eggs of Harcourt's Petrel closely resemble those of 0. leucor- 

 rhoa. The three examples in the Collection measure respectively :. 

 i-3 by -94 ; 1-25 by -96 ; 1-28 by -97. . 



