210 NowIcHE OF A NEW FOSSIL EXTINCT SPECIES OF KANGAROO. 
fore and aft extent of the crown of the upper ne is nine 
lines, that of the entire permanent series of upper molars being 
2 inches 11 lines. A second Species of Sthenurus ‘a brehws) has 
in. place and use and th iaien hee it consists of bot 
maxillaries with their respective went oy left) molar — 
_ the intervening bony plate and a po ortion of the right orbit, 
zygoma with the desce Pett sit masseteric he i The pate am 
is In an instructive phase 
“in sora M. @ Albertis described sips figured a small existing 
kin Kangaroo, under the name of Halmaturus oes 
hence in the south-east of New Geiinen, with a pre-molar more 
trenchant than in. Sthenurus, and with the econ of the 
tooth differing in the opposite extremes of fore and aft extent, 
and in greater - degree than in Halmaturus, from those in the pre- 
molar of Sthenurus. 
“ This rare Kangaroo was peg e * Zoological Gardens, 
and on its death, in November, 1874, was anatomised by the 
accomplished pro-sector, A. H. Garrod, BA, by who 
and teeth are well described and figured. Professor Garr 
refers the specimen | to the same genus as the Doreopsis muelleri 
of Sehlegel.” 
ides some other differences, “in Sthenurus the transverse 
thickness of the pre-molar decreases as the crown extends 
forward ; in Dorcopsis the transverse thickness is uniform, or 1s 
maintained to very near both ends of the crown. 
“T have not found an upper canine in a Sthenurus of any a, 
‘80! 
deviates from the Halmaturine, Doreopai ine, and Hysiprymnine 
types, and approaches that of the gre at Kangaroos represented by 
Macropus proper, Osphranter, and a Rediesin (P.T. 1874, pl xx.) 
“What evidence, it may be otked, fees the ange 
of the enduring ework —s. = recov tion 
the’skull and dentition of on e in individual. Fortu- 
_. nately the cranial characters t known are instructive 
— are well sdairk aa tharpentiont ez ‘ke skull of the smaller 
