452 
Miscellanea . 
Having since received specimens of portions of lower jaws with 
teetli identical in structure with the fragment figured in my first 
communication to the c Annals/ I find that the reference of that 
portion of tooth to the genus Dinotherium was premature and 
erroneous. The extinct species to which it belonged does, indeed, 
combine molar teeth like those of the Dinotherium with two large 
incisive tusks in the lower jaw, but these tusks incline upwards 
instead of bending downwards, and are identical in form and 
structure with the tusk from one of the bone-caves of Wellington 
Valley, described by me in Sir T. Mitchell’s * Expeditions into the 
Interior of Australia,” vol. ii. 1838, p. 362. pi. 31. figs. 1 and 2, 
as indicative of a new genus and species of gigantic marsupial 
animal*, to which I gave the name of Diprotodon australis . 
It is not my present object to describe these most interesting 
additional fossils of the Diprotodon , or to enter into the question 
whether the great femur before alluded to belonged, like the 
fragment of tooth transmitted with it, to the Diprotodon , or to a 
different and larger animal; but briefly to make known the more 
decisive evidence of the former existence of a large Mastodontoid 
quadruped in Australia, which is afforded by the tooth figured, on 
the scale of half an inch to one inch, in the subjoined cuts.f 
If these figures be compared with those of the molar teeth of 
the Mastodon angustidens , reduced to the same scale, in Cuvier’s 
1 Ossemens Fossiles/ 4to, vol i., c Divers Mastodontes/ pi. 2. fig. 
11, pi. 3. fig. 2, or with that of the more abraded molar, pi. 1. fig. 
4, they will be seen to present a generic and almost specific 
identity. 
The close approximation of the Australian Mastodon to the 
Mast . angustidens will be appreciated by a comparison of fig 1 
with a similar direct side-view of an equally incompletely-formed 
molar given by Cuvier, loc. cit. pi. 1. fig. 1; but this tooth, 
being from a more posterior part of the jaw, has an additional 
pair of pyramidal eminences; and if the proportions of the figure 
of half an inch to an inch be accurate, the European tooth is 
* See also ray paper “ On the Classification of Marsupialia,” Zool. Trans, vol. Hi. 
p. 332, in which the Diprotodon is placed with the Wombat in the family * Pfuiscolomyidee.' 
t We regret our being unable to furnish the figures here alluded to.— Ed. Tasmanian 
Journal. 
