VOL. VII.] ERYTHRISM IN EGGS. 249 



has a set on which he caught the hen, ui which it is altogether 

 absent.] 



Little Bunting {E. pusilla). — ^The most perfect examiole 

 of an erythristic phase in this genus, as the colouring ranges 

 from brownish-red markings on a pinkish ground to sepia 

 markings on a greenish. Red eggs may be seen in the 

 British Museum, and Mr. J. M. Goodall has a similar clutch 

 from the Petschora. 



Reed-Bunting {E. s. schoenidus). — Vinous coloration 

 is rare in this species but occasionally occurs (see Frohawk, 

 pi. VI., figs. 205, 206). 



Snow-Bunting {Plectrophenax nivalis). — The type with 

 a distinctly bluish ground is rare, and the more or less 

 erythristic type is normal in this species. An extreme 

 example is figured by Frohawk (pi. vi., fig. 207). 



Crested Lark [Galerida c. cristata). — The late Dr. E. 

 Rey ]30ssessed an extraordinary variety in which the 

 ground-colour was distinctly reddish, and the general effect 

 darker and redder than the ordinarj^ mottled t}^e of red 

 Tree-Pipit's egg (c/. Eier der Vogel Mitteleuropas, p. 256). 



[Wood Lark [Lidlula a. arborea). — These eggs generally 

 show a tendency towards erythrism, and have occasionally 

 been found spotted with red on a white ground, almost 

 like the eggs of the Swallow (Wales : Dr. J. H. Salter).] 



Sky-Lark {Alauda a. arvensis). — ^A set of three red eggs 

 has been taken in the Orkneys, and is now in Mr. Bunyard's 

 collection. 



Tawny Pipit [Anthus campestris). — A Spanish clutch 

 in Mr. H. Massey's collection has distinctly red-brown 

 markings. 



Tree-Pipit {A. t. trivialis). — The red types, either 

 mottled or boldly spotted and streaked, are extremely 

 common in some districts, and are too well-known to need 

 description here. They are figured in most works on 

 Oology. Mr. Staines Boorman possesses a wonderful set 

 of four terra-cotta coloured eggs (Suffolk). 



[Meadow-Pipit {A. pratensis). — My. R. H. Read has a 

 set from Surrey not unlike one type of the Grasshopper- 

 Warbler. Further evidence seems desirable before the 

 occurrence of erjrthrism in this species can be regarded as 

 established.] 



Rock-Pipit {A. s. ohscurus). — ^A beautiful pink variety 

 is occasionally met with in the Orkneys, from ^^-hich 

 locality Mr. F. C. Selous has a bright pink clutch, and Mr. 



