212 



The eggs of the Great Black-backed Gull vary but little. In 

 shape they are regular ovals, sometimes broad, sometimes narrow. 

 In the large series in the Collection, one egg is of a plain blue 

 colour, and another is blue with a few brown markings, but the re- 

 maining specimens exhibit little variety. The ground of all is of a 

 pale creamy buff or light stone-colour with an olive tinge. The 

 markings, which are of a yellowish-brown or blackish-brown colour, 

 with some underlying pale purple, are of small size and are very 

 evenly distributed over the shell, only in rare cases forming an 

 approach to a cap or zone at the large end. A few examples exhibit 

 somewhat larger blotches. The eggs measure from 2 - 7 to 3'2 in 

 length, and from 2 to 2*2 in breadth. 



2. Sukkenstappen, West Greenland. 

 1. Faroe Islands, 29th May (H. C. 



Midler: Hargitt Coll.}. 

 1. Shetland Islands (R. Dunn). 



1. Stromness, Orkneys (R.Dunn: Har- 



ffitt Coll.). 



6. Souliskerry, Orkneys, 15th June 

 (Hargitt Coll.). 



2. Loch Ashie, Inverness (Hargitt 



Coll.). 



1. Bass Eock, Firth of Forth. 



2. Saltee Islands, Ireland, 27th May 



(H. S. 8f V.\ 



3. Saltee Islands, 27th May. 

 1 . Cumberland . (Hey sham ) . 



1. Lundy Island, Bristol Channel, May 

 (H. Sounders). 



1. Lundy Island, 25th May (H. S.). 



2. Lundy Island, 1st June (IT. S.). 



2. Lundy Island, 3rd June (H. &). 



6. Tromso, Norway, llth June (H. 

 Seebohm). 



1. Tamso, Finmark. 



3. Triktiln Island, Smolen Islands, 



26th May (R. B. Sharps). 

 8. Triktiln Island, 26th May (R. R. S.). 

 3. Triktiln Island, 28th May (JR. B. S.). 

 3. Triktiln Island, 28th May (R. B. S.). 



2. Sandhavn, Sweden, May. 



Seebohm Coll. 

 Seebohm Coll. 



Seebohm Coll. 

 Seebohm Coll. 



Seebohm Coll. 

 Seebohm Coll. 



Salvin-Godmnu Coll. 

 Seebohm Coll. 



Seebohm Coll. 

 Gould Coll. 

 Saunders Coll. 



Saunders Coll. 

 Saunders Coll. 

 Saunders Coll. 

 Seebohm Coll. 



Seebohm Coll. 



Dr. R. Bowdler Sharpe [P.], 



Dr. R. Bowdler Sharpe [P.]. 

 Dr. R. Bowdler Sharpe [P.|. 

 Dr. R. Bowdler Sharpe [P.]. 

 Seebohm Coll. 



Larus dominicanus, Licht. 



Larus dominicanus, Thien. Fortpflanz. ges. Vog. tab. Ixxxviii. fig. 2 

 (1845-54); Abbott, Ibis, 1861, p. 165; Potts, Tr. N. Z. Inst. ii. 

 p. 75 (1869); Sharpe, Phil. Trans. 168. p. 107 (1879); id. ed. 

 Layard, Birds S. Africa, p. 697 (1875-84) ; Saunders, Zool l Chal- 

 lenger ' Exped. ii. pt. viii. p. 139 (1880) ; Scl. t. c. p. 151 (1880) ; 

 Buller, Birds New Zeal. 2nd ed. ii. p. 47 (1880) ; Saunders, Cat. 

 Birds B. M. xxv. p. 245 (1896) ; Sharpe, Hand-l. i. p. 141 (1899) ; 

 Hall, Ibis, 1900, p. 10. 



Larus antipodus, Thien. Fortpflanz, ges. Vog. tab. xic. fig. 2 (1845-54). 



The eggs of the Southern Black-backed Gull closely resemble 



