262 LLOYD’S NATURAL HISTORY. 
of the molars of the Kangaroos, but not connected by a 
median longitudinal ridge. The lower jaw differs from that of 
the Alacropodide in the absence of any pit on the outer side of 
the posterior portion ; and the palate also differs from that of 
the existing members of the same family in being completely 
ossified. 
That such an enormous and bulky animal could not have 
hopped after the manner of a Kangaroo is self-apparent ; and 
this is borne out by the characters of the limb-bones, which 
show that the fore and hind legs were of normal relative pro- 
portions. Until quite recently the st:ucture of the feet was not 
fully known, but from a letter from Dr. E. C. Stirling published 
in the “‘ Proceedings of the Zoological Society,” it appears that 
the hind foot was furnished with five toes, and it is probable 
that the front pair were similarly provided. In the living state 
these toes were probably encased either in hoofs, or furnished 
with large broad nails. The tail appears to have been relatively 
short, measuring only a little over a foot in length, and was 
therefore utterly unlike that appendage in the Kangaroo. 
Till a short time ago, we were acquainted with the Disrotodon 
only by isolated skulls, jaws, teeth, and bones; but in the 
letter just referred to Dr. Stirling announces the discovery of 
hundreds of complete skeletons in a salt-lagoon situated some 
twenty or thirty miles north of a still larger dry salt-lagoon in 
South Australia known as Lake Frome, and situated about six 
hundred miles to the northward of Adelaide. The deposits in 
which this hecatomb of remains are embedded is referred to 
the Pliocene period by the Australian geologists, or the one 
immediately preceding the Pleistocene. 
According to Dr. Stirling’s letter, Lake Mulligan, in which 
the remains occur, is a relatively small lagoon of about eight 
miles in diameter; the skeletons being situated about midway 
between the east and west shores, and lying two or three feet 
