296 Mr. R. Swinhoe on Formosan Ornithology. 
The evidence now before me tends to show that it is a resident 
on the inland waters of Formosa. This fact I could not at first 
reconcile with the notion that in China it was a migrant, repair¬ 
ing to the high latitudes of Amoorland to breed. The Chinese, 
however, declare that such is not the case with all individuals 
of this species, for many pairs are known to breed regularly in 
the lakes of Central China. The same habits obtain in its con¬ 
gener, the Aix sponsa of America. The Summer-Duck is said 
to be a resident and to breed throughout the United States, even 
in the most southerly of them, as also in the West India islands. 
Those, then, that belong, so to speak, to the north would be 
driven down by the freezing of the waters in their accustomed 
haunts, and they merely shift southward in quest of open water 
wherein they may seek their daily food. This explains one 
part of the case in point; the other, with regard to an inland 
Duck finding its way to an island and settling down therein, 
I leave open to theorizers. 
Megalama nuchalis , Gould. The immature bird has no tinge 
of blue on the wings. Its back is dull green and devoid of the 
yellow wash; and the fire-tipped feathers of the back of the neck 
are wanting. The yellow on the throat is paler, and the large 
bright red spot of the lower neck is represented by only a few 
light specks. Bill lighter and browner, with an ochreous edge 
to the base of the lower mandibles. This species belongs to the 
subgenus Cyanops. 
Dendrocitta sinensis , var. formosce. In the young bird the 
blue grey of the head, hind neck, and rump is much sullied and 
mixed with the liver-brown colour of the back. Several of the 
tertiary quills are tipped with the same ; and the smoke-grey of 
the under neck and breast is also strongly tinged with liver- 
brown. The tail is ashy grey for the greater part of its length. 
Corvus colonorum. An adult. Agrees well with the charac¬ 
ters already given of the species. 
Urocissa ccerulea. Full-grown young. Head and neck a dull 
blackish, a few of the occipital feathers being tipped with violet. 
(Darwin again !) Upper parts much as in the adult, but duller 
and swamped with smoke-grey on the back and rump. White 
tips to wings and tail washed with buff. Under parts smoke- 
