BLACK TEBN. 
103 
The dimensions of one of the specimens before mentioned, 
killed on the 10th of August, were as follows:—The beak 
from the forehead to the tip eleven lines; from the gape to 
the tip one inch four lines ; both mandibles very sharp 
pointed ; the nostrils the shape and size of a caraway seed, 
and pierced through. The entire length of the bird ten 
inches from the tip of the beak to the extremity of the tail, 
the wings extending two inches beyond the tail; the outer 
tail-feathers six lines longer than the middle ones; the wing 
from the carpus to the tip eight inches, and the primaries four 
inches longer than the tertials; the expanse of the wings 
twenty-two inches. The beak in this specimen was black and 
polished, much compressed laterally, and dark mahogany 
colour at the base of the under mandible ; the inside of the 
mouth red. The forehead, crown of the head, and nape 
black; the region of the eyes and a band across the front of 
the head have the black feathers tipped with white; the eye¬ 
lids feathered white ; extreme ridge of the skin black ; the iris 
is dark brown. The upper plumage from the nape to the 
tail-coverts dark hoary grey, tinged on the wing-coverts with 
reddish brown ; the tail and upper coverts pale ash grey ; 
the shafts white, the feathers paler beneath. The cheeks and 
sides of the neck pure white ; breast, belly, and flanks ash 
grey; abdomen and under tail-coverts snowy white, the latter 
as long as the tail-feathers ; under wing-coverts and shafts of 
the quills above and below white; the first quill the longest. 
The legs and feet brownish coral red ; claws black, very sharp 
and hollow beneath ; the toes webbed between. We believe 
this specimen to have been an adult bird just assuming its 
winter dress. 
Our figure represents the adult male bird in summer plu¬ 
mage, in which state the head, neck, breast, and belly, are 
dark lead grey, deepening to almost black about the head; 
