LAELDJ3. 57 



336. MEDITEEEANEAI* BLACK-HEADED GULL *. Larus melanocephalus, E - Mediter- 

 pNatterer. Eecorded from Yarmouth, Dec. 1886. 



Bill stouter than last. 



In summer. Head jet-black. 



Adults. Primaries white, except the first, which has the outer web 

 margined with black. 



Young. Outer webs and shafts of first five primaries dark brown, outside 

 of inner web of third primary white. Length 15 inches. 



337. GEEAT BLACK-HEADED G-ULL. Larus ichihyaetus, Pallas. One Egypt, Caspian 



/ occurrence : Exmouth, June 1859. to Bed Sea, 



India. /) t 



Bill orange-yellow, crossed near end with black bar ; head, throat, I/ 



and nape black; small white mark above and below eye. Length 29 

 inches. 



338. COMMON G-ULL. Larus canus, Linnaeus. Resident ; not known 



Tto breed south of the Sol way in Great Britain, but nests in West of 9) *. 

 Ireland. 



In spring. Head and neck white ; mantle pale grey ; bill and legs 

 greenish yellow ; former yellow at point. t 



In winter. Head and neck streaked and spotted with brown ; legs pale 

 brown. 



Young. Head, neck, and underparts white, mottled with light brown ; 

 tail with black band at end. Primaries black or dark brown, with white 

 spots at the end or next the end. Length 18 inches. 



339. HEEELT^G-GULL. Larus argentatuSj J. F. Gmelin. Eesident. 

 Head and neck white ; mantle pale grey ; legs and feet flesh-colour. 

 Young. Feathers above brown, with pale edges ; tail barred with brown ; jj% 



underparts white, streaked with brown. Length 22-24 inches. 



340. LESSEE BLACK-BACKED GULL. Larus fuscus, Linnaeus. Eesident. ^ ^? 



f Head and neck white ; mantle slaty black ; legs and feet yellow ; pri- /__ 

 maries nearly uniform dark brown. 



Young. Like last. Length 21-23 inches. 



341. GEEAT BLACK-BACKED GTULL. Larus marinus, Linnaeus. 

 Eesident. 



Eesembles last, but larger. Legs and feet flesh-colour ; distinct wedge 

 on third and fourth primaries. 



Young. Like last. Length 26-33 inches. 



& 



342. GLAUCOUS GULL. Larus glaucus, O. Fabricius. Winter visitor. Arctic. 



Adult. Entirely white, except grey mantle ; head and neck streaked ~ ^ 

 "with ash-grey in winter. 



Young. Dull white, mottled with pale brown ; primaries greyish 

 white ; for a short time before assuming adult plumage the mantle is 

 entirely white. Length 26-33 inches. 



* Eggs obtained in the S.W. of Spain, and stated to belong to this species, appear to 

 have been those of the Gull-billed Tern, Sterna anglica. 



