TJiC Geology of Coimaidai. 201 



across the condyles of 65niin. This breadth in itself indicates a 

 molar series of nearly 68 mm. in length. Tiie fossil, therefore, as 

 we see it belonged either to a small individual of H. aitak, Osv., or 

 M. pan, mihi, to the former preferably since the Giant Wallaby 

 has left its remains in superabundance and the Kangaroo 

 rivalling it in size in comparative rarity. But the fossil does not 

 yield by any means the measurement of the original bone, the 

 decay of its external surface having much diminished its size. 



Hnlmaturus coopen'i, 0\v. 



Tibia. A cavity in a block of matrix has been occupied by the 

 second, fourth or so of the shaft of a tibia of about the same size 

 as that of Halmatiirits agilis, a species corresponding in size 

 to H. cooperi to which it is referable. 



Nofo//ie?-iid(e. 



Radius. A subcylindrical piece of bone 150mm. long and 

 20 broad at the upper, 30 x 33 at the lower end where its internal 

 cavity has passed into cancellated structure, has much the 

 appearance of the lower half of the radius of a small species of 

 this family, very possible it had its origin in Euoivenia grata, mihi; 

 to what other animal or part of the skeleton to refer it, I do not 

 know. The osseous remains in a cavity left in another mass of 

 the matrix appears to be second example of the same bone. 



Rib. A portion of a rib 130mm. long and about 29nim. thick 

 at its proximal end has doubtless been derived from one of 

 the NototheriidjB, but to which of them is as yet beyond con- 

 jecture. Bones incertJB sedis. 



Pelvis. A portion of the acetabular region of the pelvis of 

 a large Macropod too fragmentary to yield reliable measurements. 



Tibia. A cavity of the matrix containing remains of bone 

 which apparently have been derived from the upper half of the 

 shaft of a tibia. 



Rib. Another cavity in the same piece of matrix with the 

 H. cooperi tibia, i-epresents a portion of a rib, 30 x 11 at its 

 distal surface of fracture. The number of hxrge Macropods to any 

 one of which it may possibly ha\e belonged is too great to allow 

 even a guess at its identity. 



The remaining se\en fragments of bones are to the present 

 examiner without clue to their identification. 



