EXTINCT DAYSURIDZ, 267 
FAMILY DASYURID/Z® (sugra, p. 150). 
GENUS THYLACINUS (sira, p. 150). 
THYLACINUS SPELAUS. 
Thylacinus sfeleus, Owen, Cat. Foss. Mamm. Aves. Mus. 
Roy. Coll. Surgeons, p. 335 (1845); Lydekker, Cat. Foss. 
Mamm. Brit. Mus., pt. v., p. 264 (1887). 
Thylacinus major, Owen, Extinct Mamm. Australia, p. 106 
(1877). 
Distinguished from the existing Tasmanian species by its 
considerably larger dimensions. Small specimens of the skull 
and jaws cannot be distinguished from those of large males of 
the latter; but it is probable that such specimens indicate 
female individuals, since the sexual disparity of size was pro- 
bably as well marked as in the living form 
Distribution. New South Wales and Queensland. 
GENUS SARCOPHILUS (sufra, p. 153). 
SARCOPHILUS LANIARIUS. 
Dasyurus laniarius, Owen, in Mitchell’s Australia, vol. ii., p. 
363 (1838). 
Sarcophilus laniarius, Lydekker, Cat. Foss. Mamm. Brit. 
Mus., pt. v., p. 265 (1887). 
Distinguished from the existing S. wrs¢mus in much the same 
manner as Zhylacinus speleus differs from Z. cynocephalus, 
although the disparity between the size of the extinct and 
living forms is rather less marked than in the case of the 
latter. In the fossil species the pits between the upper molar 
teeth are slightly deeper than in the living one ; and there is 
