aldwell represent the white-maned serow _Capricornis sumatrensis
argyrochaetes_ and one which I shot in May, 1917, near Teng-yueh, not far
from the Burma frontier, is apparently an undescribed form.

Our specimens have brought out the fact that a remarkable individual
variation exists in the color of the legs of these animals; this character
was considered to be of diagnostic value, and probably is in some degree,
but it is by no means as reliable as it was formerly supposed to be.

Two of the serows killed on the Snow Mountain have the lower legs rusty
red, while in two others these parts are buff colored. The animals, all
males of nearly the same age, were taken on the same mountain, and
virtually at the same time. Their skulls exhibit no important differences
and there is no reason to believe that they represent anything but an
extreme individual variation.

The two specimens obtained by Mr. Caldwell at Yen-ping are even more
surprising. The old female is coal black, but the young male is distinctly
brownish-black with a chestnut stripe from the mane to the tail along the
mid-dorsal line where the hairs of the back form a ridge. The horns of the
female are nearly parallel for half their extent and approach each other at
the tips; their surfaces are remarkably smooth. The horns of the young male
diverge like a V from the skull and are very heavily ridged. The latter
character is undoubtedly due to youth.

These serows are an excellent example of the necessity for collecting a
large number of specimens from the same locality. Only by this means is it
possible to learn how the species is affected by age, sex and individual
variation and what are its really important characters. In the case of the
gorals, our Expedition obtained at Hui-yao such a splendid series of all
ages that we have an unequaled opportunity for intelligent study. Serows
are entirely Asian and found in China, Japan, India, Sumatra and the Malay
Peninsula.

On the Snow Mountain we found them living singly at altitudes of from 9,000
to 13,000 feet in dense spruce forests, among the cliffs. The animals
seemed to be fond of sleeping under overhanging rocks, and we were
constantly finding beds which gave evidence of very extensive use.
Apparently serows seldom come out into the open, but feed on leaves and
grass while in the thickest cover, so that it is almost impossible to kill
them without the aid of dogs or beaters.

Sometimes a serow will lead th