87 
On an apparently new Species of Eucephala. 
The result' of my reexamination was my entire conviction 
of the identity of Aquila orientalis and Aquila bifasciata. 
There are several peculiarities connected with the lining of 
the wing which the younger birds of Aquila orientalis and 
Aquila bifasciata have in common. These little coincidences 
were striking. 
Another identification I made was that of Aquila hastata , 
Lesson, with the North German or Pomeranian small spotted 
Eagle. This point Messrs. Gurney and Dresser are endea¬ 
vouring to work out. I was, however, quite convinced of 
the identity of a Danzic-killed mature bird with our Aquila 
hastata in the same plumage. 
IX.— Description of an apparently new Species of Bird belong¬ 
ing to the Family Trochilidse, of the Genus Eucephala. By 
D. G. Elliot, E.L.S., F.Z.S., &c. 
The genus Eucephala is composed of eight or nine species, 
excluding the one about to be described; and as only three 
are at all common or usually met with in collections, it is 
one of the least known or understood among those comprising 
the great family Trochilidse. All the species have a resem¬ 
blance more or less great to each other, their plumage pre¬ 
senting the two colours green and blue in different degrees of 
brilliancy and extent. With the exception of Eucephala 
grayi, E. smaragdo-ccerulea, E. ccerulea , and E. cyanogenys, 
the species are as yet represented only by the types, no second 
specimens having been procured. The new species I propose 
to call Eucephala subccerulea. 
Upper part of head and back dark dull green, rest of back 
and upper tail-coverts dark green, with a rufous tinge dis¬ 
persed all over these parts; throat, breast, and abdomen beau¬ 
tiful metallic cserulean blue; flanks shining grass-green. 
• Lower part of abdomen covered by fluffy white feathers. 
Under tail-coverts metallic green. Wings purple. Tail bluish 
black. Maxilla black; mandible yellow (in life possibly red) 
for its entire length, save the tip, which is black. Eeet 
brownish black. Thighs buffy white. 
