578 Mr. S. A. Buturlin on 



Kozlov^s Pheasant may border the range of typical 

 P. strauchi in a broad semicircle, from Soho-Klioto in the 

 north-east, through Western Shensi in the east to Northern 

 Sze-chuen in the south-east. But I must add that in his 

 other work (1906, Bull. Acad. St. Petersb, v. ser. xxiv. t. 

 n. 1 & 2, p. 90) Dr. Bianchi quotes this single Hwo-zsi- 

 gou specimen as " P. berezowskii " variety of P. decollatus, 

 not as a variety of P. strauchi, and this identification seems 

 to be the more correct. 



7. Phasianus decollatus berezowskyi. {Berezowskifs 

 Pheasant.) 



P. berezowskyi : 1901, Rothschild, B. O. C. xii. p. 20. 



P. decollatus, var. : 1906, Bianchi, Bull. Acad. St. Pet. 

 V. ser. xxiv. t. n. 1 & 2, pp. 83, 90 ; 1907, Bianchi, Aves 

 exp. Kozlowi, p. 201 (yar. indiv.). 



P. aecollatus decollatus : 1908, Alpheraky and Bianchi, 

 1. c. p. 451 (nee Swinh.). 



Messrs. Alpheraky and Bianchi, in the work just published, 

 treat P. berezowskii as an individual variety of P. decollatus, 

 saying shortly that this fact is proved already in 

 Dr. Bianchi's ^Aves expeditionis Kozlowi^ (in Russian). 

 In this last-named work Dr. Bianchi states that P. bere- 

 zowskii can be considered only as an individual variety, not 

 a geographical form of P. decollatus, as it has no separate 

 range, typical P. decollatus being met with not only to the 

 south of the so-called P. berezowskii, but also far to the 

 north, in the central parts of the Alashan range. 



I must confess that when, in 1906, 1 looked through the 

 series of collarless Pheasants in the St. Petersburg Museum 

 with Dr. Bianchi, I was rather inclined to share this con- 

 clusion from the facts we had before our eyes, and reluctantly 

 to admit a case of dimorphism not known in other species of 

 Pheasants. But the basis of our conclusion, the fact — as 

 we thought then — that P. decollatus inhabited the Central 

 Alashan Mts., proved to be our own error. The Alashan 

 bird is, in fact, extremely like typical P. decollatus in general 

 appearance and was identified as such in 1906 and 1907 by 



