245 
4. On new Birds in the Collection at Knowsley. By Mr. 
Louis Fraser. In a Letter to the Secretary. 
(Aves, PI. XXV.—XXIX.) 
Knowsley Hall, November 11, 1850. 
Sift?—Having received a notification, through Lord Derby, of my 
appointment to the Consulship at Whydah, my stay in England is 
necessarily drawing to a close. I have endeavoured to meet your 
wishes by forwarding a few brief descriptions from novelties contained 
in this extraordinary'Collection, and with his lordship’s permission 1 
forward the original drawings made by Mr. Wolf, who has been en¬ 
gaged here for some considerable time. 
I have the honour to be, Sir, 
Your obedient servant, 
Louis Fraser. 
D. W. Mitchell , Esq., Sec. Zool. Soc. Loud. 
The first specimen to which I would wish to draw the attention of 
the Society is a Parrakeet of large size, which I propose calling 
Paljeornis Derbianus. (Aves, PI. XXV.) 
Forehead, round the nostrils, a small stripe from the nostrils to the 
eyes, and a broad moustache, black ; head, towards the bill and round 
the eyes, green, passing into a light violet-blue on the occiput and ear- 
coverts ;. the remaining upper parts of the bird, the thighs, vent and 
under tail-coverts green, being more yellow on the back of the neck 
and centre of the wings; the shafts of the two centre tail-feathers 
dark purplish brown, with their webs, towards the apex, blue; from 
the hinder part of the ears, down the side of the neck, and behind 
the moustache, runs a narrow line of light rose-coloured purple, which 
colour extends over the whole under surface; the under side of the 
tail-feathers greyish yellow; bill black; feet the usual parrakeet 
colour ; eyes pale straw-colour. 
Hah. 
Length from base of beak to tip of tail, 20 inches. 
Curve of upper mandible. 14 
Wing. 
Tail. 
_ ? 
8 
8A 
u 8 
104 
D 
This specimen has been many years in this collection, and I have 
chosen for its. specific name that of its noble owner. The species is 
easily distinguished from all the other members of the genus by its 
larger size, and the colours of the bill, head and breast. 
The next bird is a second species of the same genus. 
Pal^ornis erythrogenys. (Aves, PI. XXVI.) 
Male: Green; the back, between the shoulders, mealy; cheeks 
and ear-coverts red, which colour passes on to the hind head, where 
