1 
NOTICE OF A NEW FOSSIL EXTINCT SPECLES OF KANGAROO. 21] 
species under description, and the ban welcome as aepeetin 
those previously given by a corr onding portion of a 
87. 
definite genera Halmaturus, grea Lagorchestes the bon 
palate shows two or more large vacuities. In Dendrolagus the 
palate is entire, as in Macropus and Sthenurus. The masseteric 
gee is short in ‘Mapa as in the Hipsiprymnines ; it Bei 
thenurus, as in Maer 
* * * * * * 
After sched a mistake of F. ete as to the generic 
character of Macropus, the author contin 
“ Later investigations of the fossil umaile of Australia have 
led to the interesting result, that the developmental condition 
whie uvier believed to differentiate the larger Kangaroos of 
the genus Macropus from the smaller kinds referred to Halma- 
turus and Hypstprymnus does actually differentiate the huge 
extinct herbivorous marsupials of the genera Nototherium and 
Diprotodon from the Macropodide, which we know to have been 
represented by species much exceeding in size the existing 
Kangaroos. Mo 
Me hen us, Procoptodon exemplify stages of tran- 
sition to the eslusively vegetarian chara the molar series 
exe mplifie “The genera aint urus, Dorcopsis, 
rolagus, cae So uames aonouee 80 y stages in the 
mindibeseon. of the teeth for a mixed diet, mre in the Dipro- 
todont series of Marsupialia, culminated carnivorously in Thyla- 
pe er anterior incisors acquired their largest 
the same modificatio The conversion ot the sane in wy 3 
and shape, to a cacsinamaht i tooth, and the reduction of the molars 
in numbers beste size to the tubercular condition of the feline 
molar, are exemplified in Zhylacoleo, with corresponding figures 
of our Cave- tc and cerry oe in plate v1 of my ‘ Researches 
on the Fossil Mammals o * In this noes a preli- 
minary chapter is dense: to hes extinet ee f England, 
in which it is shown that at the oolitic period our Marsupials had 
also diverged, by the modifications of the fundamental type, into 
