NOTOTHERIUM. 263 
below the surface. ‘‘ Usually,” says the letter, “the salt-crust 
is not firm enough for bullock-traffic, and I may safely say that 
thousands of bullocks have at different times been bogged 
In crossing or attempting to cross. . . . . It would appear 
that an immense herd of these [ Diprotodons] and other animals 
had got bogged, probably in seeking water in a dry season, 
just as cattle do now in the north by hundreds. There is every 
indication that all this region of South Central Australia was 
formerly occupied by fresh-water lakes. We have, for instance, 
remains of Alligators or Crocodiles from a district not far off, 
and other indications of fresh-water life. Of course we are on 
the look-out for Zhylaccleo ; but, so far, it does not appear to 
have been met with; but Iam quite hopeful that if we can 
manage to prosecute the search,” such remains will ulti- 
mately be discovered. 
The difficulties of transport for such a great distance across 
an arid and inhospitable country are, of course, enormous, but 
when these are overcome, as we trust they will be, and some 
at least of the skeletons safely housed in the Museum at 
Adelaide, zoologists will look anxiously for their description, by 
which our knowledge of the bony structure of this strange 
monster will be rendered complete, 
Distribution.— Australia generally. 
In general structure the Diprotodontide appear to connect 
the Phalangerige with the undermentioned extinct family. 
FAMILY NOTOTHERIIDA:. 
GENUS NOTOTHERIUM. 
Nototherium, Owen, Cat. Foss. Mamm. Aves. Mus, R. Coil. 
Surgeons, p. 314 (1845). 
I, NOTOTHERIUM MITCHELLI. 
Nototherium mitchelli, Owen, loc. cit. ; Lydekker, Cat. Toss. 
Mamm. Brit. Mus., pt. v., p. 162 (1887). 
