ANNALS OF THE QUEENSLAND MUSEUM, No. 6 13 
articulating surface for the outer malleolus (Fig. 7B a) is some- 
what more extended ventrad. Locality, Wurdulumankula. 
Vertebra. — A moiety of a cervical vertebra, very imperfect, 
merely preserving the centrum and neural arch in part. 
In the large and deeply locked sternocoracoideal joint, in the 
obliquity of the entepicondyle of the humerus, the presence of the 
isolated tubercle proximad of it, and the smallness of the radial 
condyle, in the trihedral form of the shaft of the radius and relative 
smallness of its head, in the absence of a definite linea aspera from 
the femur, and in the strength of the ridges protecting the passage 
of the flexors of the foot, we may, in these differences taken 
together, see reason to believe that these bones would be wrongly 
ascribed to a Chenopis. 
Genus Chenopis. 
Chenopis nanus n.s. 
Coracoid. — Plate II., figs. 3 A, B. — Proximal three-fourths 
of a left coracoid 1\ mm. broad across the shaft. In an ordinary 
black swan the shaft is at the least 11 mm. in breadth. The 
fossil therefore represents a bird rather more than two-thirds of 
the size of the living species. It has all the well-known features 
of a swan's coracoid, and offers nothing but size as a means of 
discrimination. Locality, Lower Cooper. 
Humerus. — Plate II., fig. 5. — Distal fifth of a right humerus, 
22 J mm. in its greatest breadth, against 26 mm. in the smallest 
humerus of C. atrata available. The ulnar tubercle (trochlea 
ulnaris) (fig. a.), and the radial (trochlea radialis) (fig. b.) are both 
relatively small, the ectepicondyle is at its proximal end much less 
prominent, the probrachialis impression (fig. c), more contracted 
and deeper. Most of the postaxial surface of this bone is lost. 
Locality, Lower Cooper. 
Tibia. — Plate II., fig. 6. — Distal fourth of a left tibia about 
2 mm. narrower at the joint than the least breadth in the Black 
Swan, but as much broader in the shaft at its point of fracture. 
The bridge over the extensor tendon is broader than in C. atrata. 
Locality, Lower Cooper. 
Tarsometatarsus.- — Plate II., fig. 7. — Distal half of the bone 
of the left foot, the trochleas very imperfect. The osseous 
bridge between the third and fourth metatarsals in place ; 
the shaft wider by 1 mm. at its point of fracture than in C. atrata. 
From this measurement and from the presence of a line of junction 
on the shaft between the third and fourth metatarsals, it seems 
quite possible that this bone may be from a young Archceocycnu-s 
lacustris. Locality, Malkuni. 
W' Distal half from the left foot ; no bridge between the third 
and fourth metatarsals ; line of junction between these metatarsals 
