LAEUS, 213 



those of L. marinus, but the prround-coloiir is more varied, many 

 specimens being of a dark olive-buff. The markings are of the 

 same colour and character as in the eggs of L. marinus; but it 

 may perhaps be said of them that they are, on the whole, coarser, and 

 that in a larger proportion of the eggs they form a very irregular 

 cap or zone at the large end. Specimens measure from 24.J to 

 3-1 in length, and from 1-8 to 2-05 in breadth. 



3. Saldana Bav, S. Africa. Saunders Coll. 

 5. S.Africa. " Gould Coll. 



2. S. Africa. ]■:. L. Layard, Esq. [P.]. 



1. Crozet Islands, S. Atlantic (Cctpt. Saunders Coll. 

 Ar/iison). 



1. Kerguelen Island, S. Atlantic. A"oy. II. M.S. ' Challenger.' 

 23. Kerguelen Island, 8th Dec. {A. E. lloval Society [P.]. 



Eaton). 



2. Kerguelen Island, 8th Dec. {Transit Saunders Coll. 



of Venus ExpecL). 



(5. New Zealaud. Sir Gf'orge Gre}' [P.]. 



1. Island in Desire River, Patagonia, Saunders Coll. 



.•iOth Nov. {J. McCormick). 



■2. Elizabeth Island, StraitsofMagellan. Voy. 1 1. M. S. ' Challenger.' 



1. Peckett Harbour, Straits of Ma- Dr. Coppinger [P.]. 



gellau. 

 I:l. Falkland Islands (C. C. Abhott). Gould Coll. 



4. Falkland Islands (C. C. A.). 8alviu-Godman Coll. 



2. Falkland Islands (C. C. A.). Saunders Coll. 



2. Falkland Islands. Voy. II.M.S. ' Challenger.' 



I. Falkland Islands. McCormick Bequest. 



1. East Falkland. Lieut. A. Smith [P.]. 



Hybrid between L. argentatus and L. dominicanus. 



2. Laid in confinement (i/Z/br^? ^4 wan>*'). Lord Lilford [P.]. 



Larus fuscus, Linn. 



Larus fu.scus, Thien. Fortpjlanz. yes. T7/c/. tab. l.\xxviii. fig. 4, a-f 

 (1845-54); Baedeker, Eier Eur. To}/, tab. 62. fig. 2 (1855-63); 

 Hewitson, Egys of Brit. Birds, ii. p. 496, pi. cxxxix. fig. iii (1856); 

 Dresser, Birds Eur. viii. p. 421 (1873) : Seebohm, Brit. Birds, iii. 

 p. 319, pi. 51 (1885); id. Eqqs of Brit. Birds, p. 110, pi. 33. 

 tigs. 4, 5 (1896) ; Saunders, Cat. Birds B. 31. xxv. p. 250 (1896); 

 Sharpe, Hand-l. i. p. 141 (1899). 



Like the eggs of L. ridihundus, those of the Lesser Black- 

 backed Gull are subject to great variation, the ground-colour 

 ranging from a plain pale blue to a rich olive-brown. The markings 

 are disposed on the shell in every conceivable pattern, from a few 

 spots only to masses of huge confluent blotches of a yellowish- 

 brown or blackish-brown colour. The eggs measure from 2-4 to 

 2*8 in length, and from 1-7 to 2 in breadth. 



3. Fariie Islands, 1st June (II. C. Seebohm Coll. 



Midler: Hargitt Coll.). 

 3. Fariie Islands, 4th June {H. C. M. : Seebohm Coll. 

 Hargitt Coll.). 



