VOL. VII.] ERYTHRISM IN EGGS. 253 



Uken by Mr. F. C. Selous, Capt. H. Lynes, R.N., F. C. R. 

 Jourdain, Dr. Hartert, and others. Although frequently 

 met with in Spain, and also recorded from Malta and 

 Algeria, the red type has not been found in Corsica. 



SuBALPiNE Warbler {S. c. cantillans). — ^In some parts 

 ■of south Spain an extremely handsome erythristic type 

 is normal, in which deep chesnut-red blotches and spots 

 are found on a white ground. Captain H. Lynes, R.N., has 

 taken several sets of this kind. Other eggs are marked with 

 red-brown spots. In Corsica the erythristic type appears 

 to be absent, but in Greece the eggs of the eastern form 

 of this species {S. c. albistriata) frequently exhibit this 

 colouring (Seebohm, Col. Figs. Eggs Brit. Birds, pi. 53). 



Dartford Warbler {S. u. dartfordiensis). — We are not 

 aware of a single authentic instance of erythrism in the 

 eggs of the British race of this species, but it is not at all 

 uncommon in those of the Continental race {S, u. undata). 

 Mr. H. Noble took three sets of the red type in Andalucia 

 {Ibis, 1902, p. 69), and it has also been met with in the 

 same district by Mr. F. C. Selous and F. C. R. Jourdain. A 

 good many Continental clutches have been sent over at 

 ■different times by native collectors. The resemblance of 

 these eggs to those of certain types of the Sardinian 

 Warbler should be constantly borne in mind. 



White's Thrush (Turdus d. aureus). — ^Eggs of this species 

 tend to fall into two distinct types, with light bluish-grey 

 or warm brownish ground. One unusually handsome set 

 in F. C. R. Jourdain's collection is reddish-brown with 

 ■darker freckles, only the odd egg showing the huffish 

 ground. 



Fieldfare [T. pilaris). — The eggs of this species vary 

 in much the same way as those of the Blackbird. We 

 Jiave not, however, met with the white grounded type, 

 though specimens in which the ground is almost obscured 

 by reddish markmgs, and red capped eggs, are occasionally 

 found. 



Mistle-Thrush {T. v. viscivorus). — ^The greenish ground is 

 quite obscured in some specimens by reddish-brown, and 

 in other cases is replaced [by creamy-white. The latter 

 type when combmed with red markings may fairly be 

 ■claimed as erythristic. 



British Song-Thrush {T. ph. clarkei). — Two eggs from 

 Warminster, in the British Museum, are white sparingly 

 marked with rusty-brown and lUac (Cat. Eggs Brit. Mus., 



