212 



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

 phape 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 32 iu 

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



2. Sukkenstfippen, "West Greeuland. 

 1. Faroe Islands. 29th May [R. C. 



Miiller: Ilnniitt Coll.). 

 1 . Shetland Islands [R. Dunn). 



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



rjitt Coll.). 

 6. Souliskerrv, Orkneys, loth June 

 {Hcmiitt Coll.). 



2. Loch Ashie, Inverness {Hm-qitt 



Coll.). 



1. Bass Rock, Firth of Forth. 



2. Saltee Islands, Ireland, 27tli May 



(H. 8. 4- v.). 



3. Saltee Islands, 2rth May. 

 ]. Cumberland (Hei/shani). 

 1. Luudv Island, Bristol Channel, May 



{H. Saundei-s). 



1. Lundy Island, 25th May {II. S.). 



2. I.undv Island, 1st June {H. S.). 



2. Lundy Island, 3rd June (//. .S'.)- 

 6. Tromsij, Norway, 11th June (H. 



Seebohm). 



1. Tamsci, Finmark. 



3. Triktiln Island, Smolen Islands, 



2Gt]i May {R. B. Sharpe). 

 3. Triktiln Island, 2fith May {R. B. S.). 

 -,]. Triktiln Island, 28th INIay {R. B. S.). 

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



2. Sandhavn, Sweden, May. 



Seehohm Coll. 

 Seebohm Coll. 



Seebohm Coll. 

 Seebohm Coll. 



Seebohm Coll. 



Seehohm Coll. 



Salvin-Godmau 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.l. 

 Dr. R. Bowdler Sharpe [P.'. 

 Dr. R. Bowdler Sharpe [P.]. 

 Seebohm Coll. 



Larus dominicaiius, Licht. 



Larus dominicanus, Thien. Fortpjlanz. f/es. Vog. tab. I.xxxviii. fig. 2 

 (1840-.54); Abbott, Ibis, 1861. p. 165; Potts, Tr. N. Z. Imi. ii. 

 p. 75 (1869): Sharpe. Fhil. Trans. 168. p. 107 (1879); id. ed. 

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

 lenger' E:vped. ii. pt. viii. p. 139 (1880): Set. t.c. p. lol (1880): 

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

 Birds B. M. xxv. p. 245 (18L)G) ; Sharpe, Hand-l. i. p. 141 (1899); 

 Hall, Ibis, 1900, p. 10. 



Larus autipodus, Thien. Fortpfanz. ges. Jog. tab. xic. fig. 2 (1845-54). 



The eggs of the Southern Black-backed Gull closely resemble 



