the Lower Yangtse Basin. 487. 



usually gorged with frogs. As a rule, they pass straight on 

 without staying ; a marsh may he full of them one day ; two 

 days later none are to be seen, until new arrivals come in. 

 The autumn migration I have not witnessed. 



195. Circus cyaneus (L.). 



(39.) Common throughout the winter until May. 



196. Circus macrurus (Gm,). 



(40.) Circus pallidus, Sykes ; Swinhoe, P. Z. S. 1871, 

 p. 342. 



A female was obtained on the Yangtse by Captain Blakiston. 

 I have shot immature birds at Kiukiang in spring. 



197. Circus pygargus (L.). 



(41.) Said by David to occur in Central China; reported 

 doubtfully from the Yangtse by Svvinhoe. 



198. BuTEO PLUMiPES (Hodgs.), 



(26.) Buteo asiaticus (Lath.) ; Swiuhoe, P. Z. S. 1871, 

 p. 339. 



Common in winter ; most of those killed are young, very 

 pale birds. 



199. Buteo hemilasius, T. & S. 



(27.) Common in winter; mostly pale immature birds. 



200. Archibuteo strophiatus (Hodgs.). 



(38.) Archibuteo aquilinus, Hodgs.; Swinhoe, P. Z. S. 

 1871, p. 339. 



Not uncommon in the winter, especially in the marsh- 

 lands of the Yangtse. 



201. Aquila clanga, Pall. 



(12.) Spotted Eagles are not uncommon on the Yangtse, 

 both on the hills and among the reed-beds where wildfowl 

 swarm all winter. I refer them to this species, but some 

 may belong to the smaller race, A. maculata. 



202. Aquila heliaca, Savigny. 



(11.) Aquila bifasciata, J. E. Gray; Swinhoe, P. Z. S. 

 1871, p. 338. 



Common at Foochow and frequently met with in the 



