Capt. Sanine’s Memoir on the Birds of Greenland, &c. 539 
and occasionally in Baffin's Bay. A specimen killed on the 10th 
of June had the feathers of the throat mottled with white; from 
whence I infer that it undergoes the same changes from season 
as the Uria Troile. A matured specimen was sent by me to my 
brother, and reached England towards the close of the summer; 
several were subsequently brought home by the expedition which 
visited Spitzbergen, as well as by that which went to Baflin's 
Bay. TT | 
It is extraordinary that a species so abundant in the Greenland 
seas should be unnoticed by Fabricius; it must have escaped 
his observation altogether, as he has not even mentioned the Uria 
Troile, for which it might on a slight view be mistaken. Length. 
17 inches—extent 2 feet— weight 21b. 6oz.; inside of the throat 
yellow, irides dark ; throat and neck sooty brown; head black ; 
hind head, bind neck, back and wings, dark sooty brown; the 
wings being lightest, and the secondaries tipt white; the feathers 
of the head and neck have a peculiar smoothness and softness ; 
from the eye to the hind head is a line occasioned by a division 
of the feathers; belly and all beneath pure white, running up to 
a point in the neck ; the feathers are very thick, and on being 
removed a dark down appears betweet them and the skin ; legs 
marbled, brown and yellowish; claws black; no difference in 
by Brünnich in the following words: ** Lomviæ in omnibus simil- 
. lima, excepto rostro latiori et breviori, cujus margines etiam in 
exsiccatis exuviis flavescunt." The yellow margin extends from 
the corner of the mouth, along the edge of the upper mandible, 
to the point to which the feathers project on the bill: it is rather 
horn-coloured than yellow. Brünnich mentions three other birds, 
VOL. XII. à A Nos. 
