MAR 2 4897 
GENYORNIS NEWTONI—A FOSSIL STRUTHIOUS 
BIRD FROM LAKE CALLABONNA, SOUTH 
AUSTRALIA. 
DESCRIPTION OF THE BONES OF THE LEG AND FOOT. 
By E. C. Striruine, M.D., F.R.S., C.M.Z.S., Director, 
AND 
A. H. C. Zierz, F.L.S., Assistant Director South Australian 
Museum. 
Pratrs IL, 1 Vi... ann, V: 
[Read October 6, 1896.] 
A preliminary notice of this bird appeared in the Transactions 
of the Royal Society of South Australia, vol. XX., p. 171. In 
the present paper we offer the first part of that which, when 
complete, will be a detailed description of all those parts of the 
skeleton which we possess. We commence with the bones of the 
leg, as the restoration of these is now nearly finished. Further 
notices will appear as other bones become available for description. 
Femur :—Of these bones three only are in anything like perfect 
condition. A fourth, though nearly entire, is much flattened by 
antero-posterior compression, and others are still more distorted 
or imperfect. That which has principally served as the type for 
description is No. 3 of Table I. Though the dimensions of 
this are somewhat smaller than those of the large pair comprising 
Nos. 1 and 2, it is in a better state of preservation than 
either of the latter—indeed, save for slight abrasions affect- 
ing the summit of the trochanter, and for depressed areas on the 
upper part of the hinder and the lower part of the front surface, 
the anatomical details are almost perfect. 
The head approximately equals, but does not exceed, the pro- 
portions of a hemisphere ; and the part corresponding to the neck 
is but feebly defined by a very trifling constriction, which does 
not, however, involve the superior aspect. The non-articular 
part of the under surface of the neck, as it ascends, encroaches 
somewhat on the otherwise nearly hemispherical head. The 
depression for the round ligament is shallow, and situated well 
upon the upper surface of the head (PI. iii., fig. 3, A). The 
superior articular surface, after descending from the summit of 
the head, ascends, as it recedes outwardly to cover the trochanter, 
N 
