XXXII 
ON THE PREMOLAR TEETH OF DIPROTODON, AND ON 
A NEW SPECIES OF THAT GENUS. 
Quarterly Journal of the Geological Society of London, vol. xviit., 1862, 
Pb. 422-427. (Read June 18th, 1862.) 
PLATE XXI. [PLATE 38]. 
A SHORT time since, I was requested by Dr. Cotton, F.G.S., to 
examine a series of Australian fossils in his collection, which were 
procured by Mr. Isaacs from Gowrie, in the district of the Darling 
Downs in Queensland, the same locality from which other specimens 
in the Hunterian and British Museums were obtained. These fossils 
consisted of numerous teeth and fragments of jaws of Macropus 
Atlas and M. Titan: part of the upper jaw of a new species of 
Kangaroo, as large as these, but allied to Lagorchestes and Hypsv- 
prymnus ; with three lumbar vertebre, a sacrum, portions of two 
innominate bones, three ossa calcis, and a right metatarsal of the 
great toe, belonging to these Marsupials. The metatarsal is remark- 
able for its short and stout proportions. But the most interesting 
among these remains were fragments of Dzprotodon, comprising 
sundry molar teeth, a small portion of the right ramus of a lower 
jaw and parts of the right and left upper jaws of two distinct 
individuals. Of these upper jaws, the former, which I shall call No. 1 
(Pl. XXI. [Plate 38] fig 1.), contained the premolar in place and the 
socket of the succeeding molar, with one fang in place. Fortunately 
among the detached teeth, I found the crown and principal fang of this 
molar, and the premolar of the other side of the same skull. The other 
or left upper jaw, No. 2 (fig. 4), has a very different colour and texture, 
from the nature of the ferruginous matrix in which it has been im- 
bedded. Itretainsa part of the palatine plate, and holds three teeth— 
the premolar and first and second molars. What (from its aspect and 
