180 Letters, Extracts, and Xotes. [Ilji*^ 



Blackbird {TurJus meralu) : 3 ervtliristic and 1 blue set. 

 Also ervtliristic eggs of Tree-Pipit, Spotted Flycatcher, 

 Chaffinch, Red-backed Shrike, and Robiu. 



Mr. E. P. Chance showed very fine series of eggs of 

 Red-backed Shrike {Lanius collurio) and Tree-Pipit [Authus 

 tricialis) from his collection. 



Dr. E. Hartert ^ho\ved the following eggs from the 

 Triug Museum : — 



1 Herring-Gull {Larus a. argentatus) from North Cape : 

 creamy-white Mith reddish-brown spots. 



2 reputed eggs of Iceland Gull {Larits leucopterus) from 

 "Labrador": pale red -brown ground, one with large 

 chestnut-red patches, the othc-r finely spotted. Possibly 

 L. wyentatus. or if L. Itucopterus, the locality given is 

 incorrect. — Br. Birds, vii. p. 257. 



3 eggs of Sterna berg'ii velvx from the Persian Gulf, with 

 ground-colour varying from rich i eddish-cream to light 

 creamy, scribbled and spotted with blackish-brown and 

 purplish-grey shell-markings. 



1 e^^ of Gallus doviesticus, deep brown-red. 



1 Sterna fuscata iufuscata{}Ley\u.a.decls.)\ reddish-cream, 

 with dark brown blotches and underlying pale bluish-grey 

 spots. 



3 Vanellus vanellm : one brownish-rufous, two creamy- 

 rufous ground, markings normal. 



2 Otis tetra.f orient alls (Sarepta) : one reddish coffee- 

 brown, the other similar but very much lighter, with faint 

 darker brownish patches. 



Corvus [Heterocorax) capensis. A series from S. Africa, 

 illustrating constant si)ecific erythrism, unique in the family 

 Corvidse, though abnormally erythristic eggs of various 

 species occur rarely. 



A clutch of eggs of lihamphocorys clot-bey from the 

 Oued X'ca, W. Sahara, illustrating constant generic and 

 specific erythrism in the family of Alaudidffi. 



3 very pronounced erythristic eggs of the red type of 

 Sylvia a. atricapilla. 



1 Sylvia c. communis (Germany), reddish-cream with 



