156 PUFFINIDiE. 



PuflGlnus nativitatis, Streets. 



Puffinus nativitatis, Lister, P. Z. S. 1891, pp. 295, 300; Salvin, Cat. 

 Birds B. M. xxv. p. ;589 (1896) ; Sharps, Hand-l. i. p. 124 (1899). 



The single egg of the Christmas-Island Shearwater in the 

 Collection measures 2"3 by 1"45. 



1. Phoenix Island, Phcenix Gioup, .1. J. Lister, Esq. [P.]. 

 Pacific Ocean, 29th June. 



Genus MAJAaUEUS, Reielienh. 

 Majaqueus sequinoctialis {Linn.). 



Procellaria sequinoctialis, Layard, Ibis, 1867, p. 459. 



Majaqueus tequinoctialis, Sharpe, Phil. Trans. 168. p. 119 (1879) ; 



Saunders, t. c. p. 164 (1879) ; Salvin, Zool. ' Challenger ' Exped. 



ii. pt. viii. p. 143; Scl. t. c. p. 151 (1880); Salvin, Cat. Birds 



B. M. xxv. p. 395 (1896) ; Sharpe, Hand-l. i. p. 125 (1899) ; Hall, 



Ibis, 1900, p. 21. 



The eggs of the Great Black Petrel are regular broad ovals, 

 fairly smooth and white. With incubation, however, the shell 

 becomes much stained. They measure from 2-83 to 3-4 in length, 

 and from 1-95 to 2-23 in breadth *. 



2. Kerguelen Island. Voy. H.M.S. ' Challenger.' 



2. Kerfjuelen Island, 19th Nov. [A. E. Koyal Society [P.]. 

 Eaton). 



1. Kerguelen Island, 7th Dec. (A.E.E.). Royal Society [P.l. 



2. Kerguelen Island, 8th Dec. (^.£'.J?.). Royal Society [P.]. 

 2. Kerguelenlslaud, 12th Dec. (A£.^.). Royal Society fP.j. 



1. Kergueleu Island, 13th Dec. (.4. J^.jB:.). Royal Society [P.]. 



2. Kerguelen Island,27th Dec. {A.E.E.). Royal Society [P.]. 



Genus (ESTRELATA, Bjk 



The Petrels of this genus lay white eggs. They are either of a 

 regular broad oval or of an elliptical shape. The shell is smooth 

 and without gloss. 



(Estrelata lessoni (Gam.). 



fEstrelata lessoni, Sharpe, Phil. Trans. 168. p. 126 (1879) ; Saunders, 

 t. c. p. 164 (1879) ; Salvin, Zool. ' Challemjer ' Exped. ii. pt. viii. 

 p. 144 (1880) ; Scl. t. c. p. 151 (1880) ; .Salvin, Cat. Birds B. M. 

 xxv. p. 401 (1896) ; Sharpe, Hand-l. i. p. 125 (1899) ; Hall, Ibis, 

 1900, p. 23. 



The eggs of Lesson's Petrel measure from 2"75 to 2'95 in length, 

 and from 1-92 to 2-05 in breadth. 



* The egg figured by Thienemann under the name of Procellaria isqvi- 

 iioctialis (Fortpflanz. tab. xcii. fig. 6) is much too small to be accepted as thnt 

 of this species. 



