TURDIDAE-MUSCICAPIDAE. 



TURDUS VISCIVORUS L. 



Dresser *) depicts an egg with a decided green ground colour. 



On Krause's 2 ) plate of this species (from left to right: 2 nd row, 

 fig. 5) an egg is shown which likewise has a pronounced green 

 colour and which is spotted in the character of musicus. 



TURDUS MUSICUS L. 



As a rare aberration I here mention eggs with a pure white ground 

 colour, spotted rusty brown. The drawings of these eggs 3 ) remind 

 me of eggs of E. rubecula in which the yellowish pigment is absent 

 from the exterior lime layer. 



ERITHACUS RUBECULA (L.). 



That which constitutes an exception in respect of our rubecula- 

 form namely the fact that the fundamental shell layer contains 

 oocyan and that the so-called ground colour is thereby tinted bluish, 

 is mentioned 4 ) as being a rule for those of E. superbus Konig, 

 occurring in Teneriffe and Gran-Canaria. The eggs of E. akahige 

 (Temm) of Japan are of a plain dull blue colour 5 ). 



The occasional occurrence of plain white sets of eggs in the case 



J ) I. c. plate 1, fig. 4. 



2 ) Oologia universalis palaearctica. 



3 ) Wolley, 1. c. part II, p. 288, nos. 1291 and 1296. 

 Yarrell, 1. c. part I, p. 265. 



Cat. Eggs-Brit. Mus., part. IV, p. 128; plate VIII, fig. 12. 

 Dresser, 1. c. plate 3, fig. 4. 



4 ) See: „Over eenige broedvogels der Canarische eilanden en van Madeira", 

 by Baron R. Snouckaert van Schauburo, LL. D. (Yearbook of the Neth. 

 Ornithological Association, No. 7, p. 28). 



5 ) Cat. Eggs-Brit. Mus., IV, plate VII, fig. 1. 



