Mr. R. Swinhoe on the Ornithology of Northern China . 91 
(4.) C. lagopoda, Pallas. 
Similis C. urbica, sed minor, subtus nivea : cauda minus furcata : 
axillaribus saturate fuscis: tectricibus supracaudalibus ni- 
veis, racbidibus plumarum tenuissime fuscis. 
Hob. In Siberia (Pallas); in China boreali (Fleming). 
Before the Zoological Society I pointed out the undoubted 
distinctness of Mr. Whiteley's bird, from Peking, from the 
European bird, and proposed to name it after that gentleman. 
But I find, on reference to Pallas's ‘ Zoographia Rosso-Asiatica' 
(vol. i. p. 534), that the Martin therein described, from Siberia, 
under the above name, and referred by Pallas himself, and since 
then by Middendorff* and von Schrenckf, to C. urbica of Lin- 
nseus, answers in every respect to the bird from Peking, and by no 
means tallies with the European House-Martin. I feel therefore 
bound to lay aside my name, and to apply to it the older denomi¬ 
nation given to it by Pallas, which has hitherto been considered 
synonymous with C. urbica. 
18. Warbler. 
The bird observed by me was probably the same as one in 
Mr. Fleming's collection, which is identical with Mr. Blyth's 
Arundinax olivaceus. This again answers to Salicaria aedon, 
Pallas, as figured in v. Schrenck's Amur-Reise, i. pi. 12. There 
is also in this series a specimen of Salicaria cantillans ) Schlegel. 
19. Grasshopper-Lark. 
This must have been Locustella ochotensis (Sylvia ochotensis, 
Midd. Reise, p. 185, pi. 16. figs. 7. 8), described from Siberia. 
Capt. Blakiston's Hakodadi series contains one of this bird. 
22. Blue-throated Warbler. 
Mr. Fleming has brought from Peking two skins of this bird, 
both of which have the red spot on the breast, in place of the 
white spot, and are therefore referable to Cyanecula carulecula 
(Pallas). 
24. Blue-tail. 
Our specimens of this bird agree with Japanese examples, 
which differ from Ianthia rufilata , Hodgson, of the Himalayas, 
in having a white eyebrow-mark where the latter has only a 
bright blue one, and in being more dingy on the upper parts. 
* Sib. Reise, p. 189. + Amur-Reise, p. 388. 
