14 
ANNALS OF THE QUEENSLAND MUSEUM, No. 6 
not obliterated ; breadth of shaft 7J mm. Locality, Wurdulu- 
mankula. 
Pelvis. — Plate II., fig. 4. — Mesial part of the axis of a pelvis 
•comprising the ischiadic, sacral, and many of the postsacral vertebrae, 
too imperfect to yield any characters of specific value. Locality, 
Unduwumpa. 
Biziura exhumata de Vis. 
Humerus.— Plate IV., figs. 1 A, B.— Proximal half of left 
humerus. Compared with the humerus of B. lobata, the following 
differences are manifest : The bone is larger, but not greatly so ; 
the incisura capitis (fig. B,a.) is narrower, the capitum (figs. A and 
B b.) is more globular, the notch between it and the tuberculum 
externum (fig. A,c.) deeper ; the crista superior (figs. A. and B,d.) 
is stronger and higher ; the pneumatic foramen larger, and its 
lip (proximad) more arched ; the shaft is 1 mm. broader, but is 
not thicker. Locality, Malkuni. 
Tibia.— Piste IV., fig. 2.— Distal half of a right tibia. The 
only prominent feature differentiating this from the corresponding 
part in B. lobata is the comparative shortness of its intercondylar 
sulcus ; were it from the opposite side, it would make a perfect 
joint with the tarsometatarsus of the bird from the Darling 
Downs, elsewhere described. Locality, (?) 
Pelvis. — Plate IV., fig. 3. — A large part of the preacetabular 
region of a pelvis forward from the fore edge of the right 
acetabulum, but without the iliac fovea. The vertebral hypapo- 
physes form a deep keel, having its edge undulated, but not 
interrupted or pierced with foramina ; length from edge of 
acetabulum 47.5 mm. Locality, East of Pirani. 
It is curious that the musk duck, now one of the most solitary 
of the whole tribe, should be found associated with so many other 
waterbirds, both in South Australia and Queensland. One is 
tempted to think that the habit of isolation, so marked in the living 
species, is a symptom of generic decay, a decay which our occupation 
of its haunts will rapidly turn into extinction. 
Anas gracilipes n.s. 
Coracoid. — Plate IV., fig. 4 A, B. — A fairly well preserved 
left coracoid, 38 mm. in length, similar in size and proportions 
to that of Anas (Nettium) castanea, from which it differs in the 
following points : The acromial process (fig. 4a.) is much 
slenderer ; the humeral facet or glenoid cavity is concave dorsad, 
but convex ventrad ; the scapular facet is deep and cuplike ; 
the visceral surface of the base of the shaft is traversed by two 
oblique ridges, which are continuous (fig. 4c) ; the articulating 
surface for the sternum is but slightly reverted at its inner end 
fig. 4b.). Locality, Lower Cooper. 
