1280 A GLIMPSE OF THE POST-TERTIARY AVIFAUNA OF QUEENSLAND, 
Ulna . — The proximal end of an ulna of this duck has been 
met with, but requires no further notice. 
elbow joint. Its specific differences in tlie structure of the joint 
are greater relative length of the ulnar condyle and gi'eater obli- 
quity of its palmar edge, a greater oVjliquity of the groove between 
it and the ulnar tuberosity, greater extent of the palmar depres- 
sion, greater size and di.stinctness of the impression in place of the 
ectocondylar tubercle, a much deeper transverse depression on the 
anconal side between the tuberosities and more strongly marked 
grooves over the anconal side of the joint. If these are deemed 
sufficient for specific distinction the writer suggests for the extinct 
bird the name at the head of this notice. 
Left coracoid . — The fore and aft compression o" the shaft un- 
mediately below the inner process, and the absence of any 
expansion or production of the point of that [)rocess are characters 
almost sufficient in themselves to show that this is a coracoid of 
one of the Anseres: taken in conjunction wdth the extension of the 
sternal facet across the whole breadth of the sternal end, they leave 
no room for doubt on the question. We may in brief compare it 
directly wfith the corresponding bone in Nyroca australis. It is a 
trifle shorter, but in the shaft distinctly stronger. The supra- 
glenoid crest is larger relatively and has a more rapid inclination 
from the glenoid border — on its hinder side the ridge descending 
from it to the scapular process is better marked, and overhangs a 
much deeper and broader depression of the shaft on the hinder 
side beneath the process — the process itself is more rounded 
and produced on that side. On the foreside of its upper edge, 
the area within that edge and a ridge continuing upwards the 
anterior margin of the glenoid cavity is broader and its limiting 
ridges stronger. The lower edge of the scapular surface is not 
exserted, the inner sternal angle is more rounded, the inner 
side of the expanded end of the shaft more numerously marked 
with oblique ridges, the glenoid fossa facing le.ss outward. As 
the superiority in size and strength over the recent bone shown 
by this corresponds fairly with that observed in the humerus 
already mentioned, no reason can be given why the coracoid under 
observation should not be attributed to the same bird. 
