ale at Pudeepyo,
in the beginning of January, which had a distinct tendency to the
formation of a dusky lateral stripe, as in the last species; the
under-parts also were much more rich orange than in the type of this
species. In the grey phase of _S. caniceps_ that species is so like
_S. Blanfordii_ in the colouring of the upper parts and feet that
it is almost impossible to distinguish them, but, according to Dr.
Anderson, "on examining the under parts it is found that in these
phases of _S. caniceps_ they are grey, whereas in _S. Blanfordii_
they are a beautiful rich orange, and the feet are yellow."

Before proceeding to the next species, which is a better marked one,
I will quote one more passage from Dr. Anderson's careful comparison
of the four preceding squirrels. "_S. Phayrei_ corresponds in the
colour of the upper fur to the yellow phase of _S. caniceps_, and
the tail is the same as in it, having a black tip, which is the
character also that that appendage has in _S. pygerythrus_. In some
examples of _S. Phayrei_ the dusky or blackish is not confined to
the lateral line, but extends over the outside of the fore-limbs,
the feet being always yellow in squirrels presenting these
characters. Some specimens of _S. pygerythrus_ show a distinct
tendency to have yellow feet, and further research will probably
prove _S. Phayrei_ to be only a variety of _S. pygerythrus_. When
Blyth first encountered this form, he simply regarded it as a variety
of _S. pygerythrus_, and I believe his first opinion will be
ultimately found to be more in accordance with the real
interpretation of the facts than the conclusion he afterwards
adopted. In the Paris Museum there is an example of _S. Blanfordii_
from Upper Burmah which distinctly shows a dark lateral streak, so
that, taking into consideration the other examples to which I have
already referred, there seems to be a presumption that it and _S.
Phayrei_ are one and the same species, and that they are probably
identical with _S. pygerythrus_; moreover, my impression is that a
more extensive series will establish their identity with _S.
caniceps_. This view of the question is also supported by a small
series of these squirrels in the Leyden Museum from Tounghu in Upper
Burmah, presented by the Marquis of Tweeddale. From the characters
manifested by these squirrels, and the circumstances that they were
all shot in one locality, they are of great interest. One is an adult,
and in its