854 DR. J. MURIE ON THE SPECIES OF PHASCOLOMYS. [Dec. 12. 
P. setosus, Gray (the pale variety), Ann. & Mag. Nat. Hist. vol. xi. 
p. 457, 1863. 
P. angasii, Gray (the brown variety), Ann. & Mag. Nat. Hist. 
xi. p. 457, 1863. 
P. niger, Gould (the black variety), Mammals of Australia, vol. 1. 
letterpress to pl. 60, 1863. 
3. PuascoLomys MAGNUS? 
A fossil species, undescribed ; bones several times as large as those 
of either P. wombat or P. platyrhinus. Specimens in the British 
Museum. 
Subgenus Lasroruinvs, Gray. 
Fur smooth and silky ; muffle hairy ; incisors much curved, form- 
ing nearly a semicirele; the enamelled surface directed nearly for- 
wards. Dorsal vertebre 13; ribs 13; lumbar vertebre 6. Skull 
broad in proportion to length; nasal bones relatively very broad ; 
frontal bones broad, presenting a well-marked supraorbital ridge 
and postorbital process ; supratympanic hollow, very large; fora- 
men magnum oval; transverse processes of caudal vertebre short 
and narrow. 
4. PuascoLomys Latirrons. (PI. XLVII.) 
Size about equal to that of P. wombat, but body longer. Fur of 
a light silvery mouse-colour, with mottled, darker, buff and purplish 
hairs; muffle broad, white, and hairy; ears large, prominent, and 
acutely pointed ; white spot above each eye; chest, neck, and inside 
of fore limbs whitish ; rump of a rufous tint. 
Phascolomys latifrons, Owen, Proc. Zool. Soc. 1845, p. 82, and 
Trans. Zool. Soc. vol. iii. p. 303. 
P. latifrons, Angas, Proc. Zool. Soe. 1861, p. 269. 
P. lasiorhinus, Gould, Mamm. Australia, vol. i. pls. 59, 60. 
P. latifrons, M‘Coy (see Gould’s text). 
Lasiorhinus M‘Coyii, Gray, Ann. & Mag. Nat. Hist. vol. xi. 
p. 459, 1863. 
