On an apparently new Species of Eucephala. 87 



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. Gumey 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 Trochilidae, of the Genus Eucephala. By 

 D. G. Elliot, F.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 Trochilidae. 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. ccBrulea, 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 flufiy white feathers. 

 Under tail-coverts metallic green. Wings purple. Tail bluish 

 black. Maxilla black j mandible yellow (in life possibly red) 

 for its entire length, save the tip, which is black. Feet 

 brownish black. Thighs buffy white. 



