422 Mr. S. A. Buturlin on Birds 



I give tlieir dimensions in millim. : — 



N'osfrils 



Evidently P. rossikowi is not smaller than typical 

 P. pyrrhula, and it has a larger bill, somewhat differently 

 shaped, being more swollen in its basal half and more suddenly 

 compressed near the point ; this difference is not striking, 

 yet evident in a series. In both forms the first primary is 

 usually nearly equal to the fifth or only a little longer. The 

 black cap in P. rossikowi is — if anything — somewhat larger 

 than in typical P. pyrrhula, i. e. somewhat more prolonged 

 on the nape and hind-neck * (so far as can be ascertained 

 from stuffed skins), and seems to be even less rounded 

 behind. In males the red colouring of the under parts is 

 somewhat brighter * and of a brick-red shade in P. rossikowi : 

 it is a little paler and duller and more roseate or crimson- 

 coloured in P. pyrrhula. The white rump-baud in P. rossi- 

 kowi is somewhat narrower, 22-26 mm. wide (23-27 mm. in 



* In P. europcea (=minor of Eadde),on the contrary, the cap is shorter 

 and the red of the under parts duller than in P. pyrrhula. 



