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interspace between the two longitudinal ridges at
the posterior part of the bone. These bring a single linea
aspera in the corresponding part of the shaft of the
human femur, where likewise the orifice of the ascending
canal of the medullary artery is conspicuous.

From the femur of the Ox or xxxxxxx Buffalo, the bone
from New Zealand differs in its cylindrical form ; in the
Ox it is three sided, .....* in the corresponding part of
the shaft of the femur the trochanter* missor would be
included, of which there is no trace in the fossil ; whilst
on the other hand, both the anterior & the two posterior
longitudinal ridges are absent in the femur of the
Ox : the difference between the bone from New Zealand
& the shaft of the humerus of an Ox is still more striking.

A portion of the shaft of the femur of a Horse or A...
corresponding in length with that of this bone here described
would have exhibited a portion of the small
trochanter, as well as nearly the whole of the external
& this trochanter, & of the dip & rough depression
below this trochanter. The orifice of the medullary
artery is as conspicuous in the femur of the horse
as in that of the Ox, on the outer & posterior part of
the middle of the shaft.

The shaft of the femur in the Hog approaches more
....ly* in form to that of the fossil than the bones
with which it has just been compared, but no
species of Pig is now known which presents a femur
of equal size. The exterior linea aspera* is formed
by a sharp angle which divides the outer from the
interior surface of the bone, both of which sur-
faces are nearly flat in the Hog's femur ; the
corresponding ridge, besides being less sharply
developed than in the fossil is situated more on
the posterior side of the bone : the anterior bi-
..urcating ridge is wanting in the femur o
the Hog.