NO. 2255. 



CATALOGUE OF SIBERIAN BIRDS— RILEY. 



613 



The three specimens listed above are lighter, both above and below 

 than in a series of five specimens from western Europe. The axil- 

 laries, though, are as heavily barred as in any European bird in the 

 series, so this can not be a very reliable character. As there seems to 

 be some doubt of the applicability of Hodgson's name Gallinago uni- 

 clavus as given by Thayer and Bangs,^ it is probably better to use 

 Buturlin's name.^ 



There seems to be little or no difference in size between European 

 and east-asiatic birds, as the following will show : 



Locality. 



Culmen. 



Four males from Europe 



Ten males from eastern Asia 



Three females from Europe 



Eight females from eastern Asia 



mm. 

 65.9 

 69.5 

 70.3 

 65.9 



21. PISOBIA ACUMINATA (Horsfield). 



Two females, Sucharin Island, Kolyma Delta, July 9, 1915; one 

 female, Kolyma Delta, July 14, 1915. 



22. PlSOBIA MACULATA (Vieillot). 



One female, immature, Koliutschin Bay, August 10, 1914. 



23. PISOBIA RUFICOLLIS (Pallas). 



One male and one female, Emma Harbor, August 4, 1914. 



24. PISOBIA TEMMINCKII (Leisler). 



One female, Nijni Kolymsk, June 22, 1915. 



25. ARQUATELLA COUESI Ridgway. 



One immature female, Koliutschin Bay, August 10, 1914. 



26. CANUS CANUS ROGERSI Matthews.^ 



One immature female, Chaun Bay, August 17, 1914. 



Mathews, in his great work cited below, has divided the knots into 

 three races — an European, an Asiatic, and an American. The series 

 at my command seems to confirm this arrangement, except that birds 

 from Alaska seem to belong to the Asiatic form. Birds from the 

 eastern United States seem to be paler above, with more rufous and 

 less black, when compared with European specimens. Asiatic birds 

 are, as Mathews says, somewhat intermediate, darker than American 

 specimens, but not so dark as those from Europe. With the Asiatic 

 race I would include the Alaskan specimens as above stated, since 

 they seem to be identical. 



> Proc. New England Zool. Club, vol. 5, Apr. 9, 1914, p. 14. 



' Scolopax {Gallinago) gallinago raddei Buturlin, " Limicolae of the Russian Empire." 

 Pt. I, Tula, 1902, p. 54. 



•Birds, Australia, vol. 3, pt. 3, Aug. 18, 1913, p. 270. 



