in a new Species of Wild Swan. 3 
origin and at their junction with the lungs, but greatly expanded throughout 
the intermediate portions, and somewhat depressed, being one inch one line 
wide, and only eight lines in depth. 
The muscles of voice are the same in number and situation as in the Hooper 
and Cygnus Bewickii. 
The whole length of the sternum is nine inches three lines, the greatest 
width four inches; the hollow protuberance on its internal surface is formed 
by a sudden rounded elevation of the superior bony plate, which is compressed 
at the sides, and measures in length as also in height one inch six lines, and 
in width nine lines; from the edge of the keel to the upper surface of the 
protuberance three inches five lines. 
The following other measurements are here inserted for comparison with 
those of our British wild swans in the last-published Part of the Transactions 
of this Society. 
Inches. Lines. 
Point of beak to the end ofthetail . . . . . 70 O0 
edge of the forehead... .. 4 li 
CFO. . 1 no g ý 
Occiput. a: as a cS M 
Carpus to the end of the primaries . . . . . 24 0 
Tail-feathers, in number, 24. 
Length of tarsus . : 
middle toe and nail . . 
the breast-bone 
Depth of insertion of the trachea . 
Length of the bronchial tubes . 
i Oi OO Q k 
Oo Q' QUO 
A fine preserved specimen of the Trumpeter in the museum of the Hudson's 
Bay Company, in Fenchurch Street, afforded the external measurements here 
detailed. Two skins of swans of the same species in the collection of the 
Zoological Society are from younger birds, and are somewhat smaller in their 
several dimensions. 
The Hooper, it will be recollected, has but one decided convolution of the 
trachea within the sternum, and that one is vertical; Bewick's swan has also 
but one convolution, and that horizontal; our present subject, it will be seen, 
B2 
