to the Ornithology of Japan. 39 



species, the shoulders are black and the secondaries white, 

 but the first three primaries are only white on the outside 

 half of the basal half of the inner web. 



MOTACILLA AMURENSIS. 



This species appears also to be perfectly distinct from its 

 allies, and may be always distinguished from the preceding 

 two species by its grey shoulders and secondaries. In the 

 distribution of the white on the three first primaries it agrees 

 with M.japonica. The male in summer plumage has a black 

 back, suffused with grey on the rump, but the male in winter 

 and the female in summer have grey backs. The throat is 

 black in summer and white in winter, but the breast is always 

 black. The only species with which this bird is likely to be 

 confused is M. ocularis. From this, however, it is perfectly 

 distinct, with an entirely different geographical range. M. 

 amurensis bears the same relation to M. ocularis that M. 

 yarrelli does to M. alba, and is in every respect as distinct. 

 The males can only be confounded in winter plumage, but 

 the lighter slate-grey, especially on the rump, of M. ocularis 

 is a sufficient distinction. The latter species is not found 

 in Japan. 



MOTACILLA SULPHUREA. 



A series of Japanese examples vary in length of tail from 

 3'6 to 3*7 inches, and are therefore of the var. melanope. 



MOTACILLA FLAVA. 



A skin from Canton and another (No. 2781) from the 

 Kurile Islands have the head dark olive-green, the eye-stripe 

 yellow, and the ear-coverts dark brown, and are therefore of 

 var. taivanus. An example from Hongkong collected by 

 Jouy also belongs to this form. 



CETTIA CANTANS. 



CETTIA CANTILLANS. 



Carefully sexed examples of these two species, collected by 

 Mr.P.T. Jouy, of the Smithsonian Institution at Washington, 

 about the centre of the main island of Japan, seem to prove 

 that I was wrong in uniting them. It is curious that two 



