THE THYLACINES, I5!1 
short, simple, and non-extensile; lower lip rounded and not 
produced ; chest without a gland. Four pairs of large molar 
teeth in each jaw, the lower ones with their outer cusps larger 
than the inner ones. 
The following may be taken as the distinctive characteristics 
of the genus under consideration: Size large ; form Wolf-like ; 
muzzle long and slender ; ears of medium size ; tail long, short- 
haired; feet markedly digitigrade, the front ones with the 
toes furnished with short, thick, conical claws, and the hind 
pair with only four toes, owing to the absence of the hallux. 
Back marked with transverse black bands. Four teats. Mar- 
supial bones rudimentary. Four pairs of premolar teeth. 
Although the occurrence in Queensland of an animal allied 
to the Thylacine has been reported, this has not been confirmed 
by the capture of specimens, and the genus seems now to be 
represented only by the undermentioned Tasmanian species. 
There is, however, good evidence that a larger species existed 
during the Pleistocene, or latest geological epoch, on the 
Australian mainland, where its fossilised remains are not 
of uncommon occurrence in the caverns and _ superficial 
deposits. 
I, TASMANIAN THYLACINE. THYLACINUS CYNOCEPHALUS. 
Didelphys cynocephala, Uarris, Trans. Linn. Soc., vol. ix., p. 
174 (1808). 
Dasyurus cynocephalus, Geoffroy, Ann. Muséum, vol. xv., p. 304 
(1810). 
Thylacinus harrisi, Temminck, Monogr. Mamm., vol. i., p. 63 
(1827). 
Lhylacinus cynocephalus, Fischer, Syn. Mamm., p. 270 
(1829); Thomas, Cat. Marsup. Brit. Mus. p. 255 
(1888), 
