ANNALS OF THE QUEENSLAND MUSEUM, No. 6 15 
Tarsometatarsus. — Plate IV., fig. 5 A, B. — A bone of the 
right foot, 35 mm. in length. This is somewhat (1 mm.) 
shorter than the smallest corresponding bone of Anas punctata 
with which it may be compared. Though evidently related, 
the two bones differ much. The shaft of the fossil is broader 
in the middle than the other, and consequently its edges 
are more nearly parallel one to the other. Its trochleas are 
narrower and longer ; the third (fig. 4a.) is produced beyond 
the fourth ; the second rises from the shaft in a long ridge proximad. 
The longitudinal ridges on both aspects of the shaft are very 
prominent, indicating much more capacity for an active employment 
of the foot than is given to the living bird. Locality, Kalamurina. 
Anas (Nettium) strenua n.s. 
Humerus. — Proximal four-fifths or somewhat less of a left 
humerus (Plate IV., fig. 6). As this bone approaches in form 
most nearly to that of the Teals among recent ducks, it may be 
consigned temporarily to the genus Nettium. In dimensions 
it agrees with the humerus of the Shoveller, Spatula rhynchotis, but 
from this it diverges in the direction of the Teals in its relatively 
small capitum and in the shape of its pneumatic foramen, whose 
opening is less rotund and more lenticular. Length, 62 mm. ; 
breadth across the proximal end, 18 mm. Locality, Patteramordu. 
Distal third or less of a left humerus, which may possibly 
have belonged to the preceding. This part of the bone is also 
in agreement as to size with the part in Spatula rhynchotis, but 
is at once differentiated from it by the inferior size of its trochleas, 
especially that of the radial (Plate IV., fig. 7a.), and by the 
depth and length of the sulcus between the trochlea and the adjacent 
epicondyle (b). Locality, Patteramordu. 
Nyroca effodiata n.s. 
Humerus. — Plate IV., fig. 8. — Extreme distal end of the 
right humerus of a duck of small size. Though more nearly 
approaching to the hardhead (Nyroca) than to any other living 
duck, the propriety of adding it to that genus is doubtful, not 
so much on account of inferiority in size, and consequently 
great inferiority in that respect to its contemporary N. robusta, 
but because of a somewhat different shape of the bone on 
its ulnar extremity. This is more produced distad in N. 
australis, the ulnar condyle and its epicondyle forming an 
oblique instead of a right angle with the long axis of the shaft. 
The probrachial impression, of which part is preserved, extends 
distad beyond the proximal end of the radial condyle, and it is 
separated from the tendon facet distad of it by a narrow and rather 
high ridge (a), the tendon facet itself is concave, as in N. 
robusta, not flat as in the living Nyroca. The greatest breadth 
