266 Mr. R. Swinhoe on Formosan Ornithology. 
are deep black; forehead and throat a lighter shade of the same. 
General plumage deep bluish grey, with a tinge of yellowish olive. 
Axillaries buff and white, somewhat mottled with grey. Centre 
of belly and vent white, the latter tinged with buff. Winglet, 
primary coverts, primaries, and rest of the quills black, the three 
first margined narrowly, the rest broadly, with the prevailing 
colour. The under wing whitish on the inner webs of quills; 
the fourth quill longest. Rectrices 12 in number, narrowest at 
their tips, the lateral feather being ^ in. shorter than the rest. 
The two central rectrices blackish grey, with about an inch of 
black at the tip, margined with grey. The other rectrices vary 
in the amount of black, having at first a small white tip and 
narrow white margin, both these increasing in extent as you 
advance to the outermost feather, which is blackish to a greater 
proportion and more largely ornamented with white. My female 
differs from the male in having a rather longer and less deep 
bill, and in having no black on the region of the face. She 
has also the belly whitish instead of for the most part grey, and 
is there barred with light-grey striations. In other respects she 
is similar to the male, but is perhaps a little lighter. Both birds 
have many of the grey feathers throughout the general plumage 
with dark shafts. 
The nearest ally to this species is the Graucalus macei } Lesson 
( G . papuensis auctorum, seu G. nipalensis , Hodgs.), which is 
larger, with larger bill, has much less black on the face, is of 
a lighter colour, and has no buff on the axillaries, besides dif¬ 
fering in minor particulars of colouring and proportions. Our 
bird is a resident species, and is perhaps no more than a race 
of the G. macei, which is widely distributed throughout the 
tropical part of the continent of Asia, the rather slight variations 
being probably due to its isolated position. I may add that it 
has closer affinities with a Nepalese specimen from Mr. Gould's 
collection than with those from the Indian plains. For an 
account of the habits of G. macei , I must refer my readers to 
Horsfield and Moore's List, vol. i. p. 174. 
28. Dicrurus macrocercus, Lath. 
Mr. Blyth has identified our Chinese Black Drongo with the 
