248 
MEMOIRS OF TEE QUEENSLAND MUSEUM. 
In view of the present writers suggestion (1921, p. 73) that the extraordinary 
lateral extensions in Euryzygoma supported “ cheek pouches,” it is of interest to note 
that Troxell, following Lull’s remarks regarding similar structures in the Ceratopsia, 
notes the possibility of “ check pouches” as an explanation of the dependent processes 
in Entelodonts ( Joe . cit.. p. 255). 
The full molar series is present in the cranial remains sent by Messrs. Zeller 
Brothers, but one of the subtriangular premolars is incomplete. A tract of dentine 
is exposed on the hind lobe of the last molar, but the state of wear on the series is 
very much less than in the first -described cranium. The premaxillae are missing, and 
the fragments of the occipital and parietal regions arc so badly crushed that they 
do not lend themselves to useful reconstruction. 
Diprotodon australis. 
Dorsal vertebra. This specimen was in four pieces, but now forms a fairly 
complete vertebra representing a Diprotodon fully as large as the well-known cast 
of this marsupial supplied by the Museum of South Australia, Adelaide. Incidentally 
it may be mentioned that we have individual bones which far surpass the dimensions 
of this cast, and one of them, presented by Mr. Thomas Jack, of Dalby, was recorded 
by the writer in 1924. 3 This vertebra from Brigalow is thinly covered with a deposit 
of calcareous earth, which is very characteristic of some specimens found near the 
Condamine River on or near the surface. 
Macropus anak. 
Incomplete left incisor of an aged individual. This specimen has the bluish 
tint, corresponding to Ridg way’s “ cinereus,” which is frequently seen in the enamel 
of fossil macropodes from the Darling Downs. The facet of wear on the inner 
surface, caused by the movement of the two rami and made possible by the non- 
rigidity of the symphysis, is well marked on this incisor. The significance of this 
feature in present-day marsupials has been interestingly dealt with by C. Anderson. 4 
Fragments representing an almost complete humerus and a femur are 
tentatively placed with this species, whilst a portion of a pelvic girdle with a perfect 
acetabulum represents either a younger individual or one of the smaller species. 
Chelonian fragments. 
Three small pieces of a carapace (F. 2119) are evidently conspecific with the 
type material of the extinct Chelonian described by the late C. W. De Vis as Chelymys 
uberrima , 5 but which should be more correctly known as Emydura uberrima. The 
largest shard is about 50 mm. by 40 mm. These small fragments show that the 
sulci or grooves between the horny shields' on the carapace are deep and well 
defined, very much more so than in Emydura macquarrii and even more than in some 
species of Chdodina . In this respect they resemble the latter genus. There are no 
prominent rugosities on the shards, but vermicular impressions are noticeable. 
Another specimen from Brigalow (F. 2119) is a fairly complete right ilium of 
a Chelonian, which is much more robust in the shaft than the ilium in an exceptionally 
large specimen of Chdodina expansa , the carapace of which is 380 mm. in length. 
3 1924, Longman, Mem. Qld. Mus., viii, p. 17. 
4 1927, C. Anderson, Austr. Zoologist, v, pp. 105-112. 
5 1897, De Vis, Ann. Qld. Mus., No. 3, p. 3. 
