ARMSTRONG’S YELLOW-SHANKS, 407 
equally separates it from the Godwits, in which the lateral 
grooves run quite, or very nearly, to the point. 
Again the webbing of the feet reminds one of 7. semzpal- 
matus, Gmel.; but that is altogether a larger bird, (wing, 8:25), 
with a longer and much slenderer bill (at front, 2.42) with very 
much longer tarsi (2°58), and a huge, unmistakeable, white patch 
on the wing. 
In the short tarsus and stout bill this species is allied to 
Z. incanus, Gmelin, but that is decidedly a smaller bird, with 
as extreme dimensions, wing, 6°95 ; tarsus, 1°37; and bill at 
front, 1°55, with a proportionally longer and more rounded tail, 
and shorter mid-toe, with a less stout bill, and scarcely any 
webbing to the feet. The plumage further of our birds (at any 
rate in winter, for we know as yet nothing of the summer garb) 
differs entirely from that of the Ash-coloured Yellow-Shanks. 
AS VET no other species has been recognized as belonging to 
this new genus, 
