DIPROTODON. 
MG 
vertebra measuring inches Jn antero-posterior diameter, 3 
inches in vertical diameter, and inches in the transverse 
direction. The most remarkable character presented by this 
body of a vertebra consists in a deep transversely oblong 
depression situated in the tract between the neurapophyses, a 
character very rarely found in mammalian vertebra, but 
which is found in the dorsal and lumbar vertebras of the 
Wombat. The second bone is a right os calcis, or heel 
bone, which measures 0 inches in length and in breadth; 
it presents two large articular surfaces at right angles to each 
other upon its upper ami anterior j)art, has a short calcu- 
neal process, which is broad, depressed, and bent upwards, 
and is perforated at the base ; there is moreover a thick obtuse 
process, directed downwards from the internal and under part 
of the hone. Of this calcaneum. Professor Owen remarks, 
that it presents some features of that of the Myladon and 
Mastodon, and others which are peculiar to itself, hut its 
essential characters, that of having the articular surfaces two 
in number, are only found in the Wombat and Koala. 
Figures of several of the specimens alluded to in the pre¬ 
ceding pages will bo found in the Catalogue of Organic 
Remains, &e. in the Museum of the College of Surgeons. 
Genus, Nolotheritnn , 1 (fossil.) 
Nolotheriuw. Owkn, in the Report of the British Association for 184-1, p. 
231 ; and, in Catalogue of the Fossil Organic Remains con¬ 
tained in the Museum of the Royal College of Surgeons, 
p. 314. 
1 From yoros, the south ; and Oijpioy, beast. 
