Nuyts Archipelago and of Cape York. 679 
In working out this animal, [ have again examined a fine 
series of Bandicoot skins and skulls obtained by Mr. Robin 
Kemp at the extreme north end of the Cape York Peninsula 
in 1912-13. Some of them are the large animal with an extra 
crook on its m*, which represents Ramsay’s torosus, whether 
that is or is not separable from Gould’s macrourus. 
But the series of a small species related to auratus seems 
certainly to be distinguishable, and may be called 
Isoodon peninsula, sp. n. 
Size and general characters as in Z. auratus of the Northern 
Territory of 8. Australia. Colour, on the whole, similar, 
but the light bands on the hairs are paler, more buffy, less 
ochraceous, and, especially, the sides have not the ochraceous 
wash generally found in awratus, and no doubt the basis of its 
name. Under surface white. 
Skull, as in auratus, distinguished from that of obesulus by 
the almost complete absence of any sexual difference in size, 
the males not or but little longer than the females. General 
size about as in awratus, but the muzzle decidedly longer and 
not so conical. A skull of auratus with a zygomatic breadth 
of 29 mm. hasa muzzle length (orbit to gnathion) of 29°6 mm., 
while one of peninsula, with the same breadth, has its muzzle 
33 mm.; and this difference runs throughout the good series 
available. Nasals in consequence markedly longer. Palatal 
vacuities and bull slightly smaller, but both as usual very 
variable. 
Teeth, on the whole, rather smaller than in auratus, but the 
difference very slight. 
Dimensions of the type (measured in the flesh) :-— 
Head and body 308 mm.; tail 116; hind foot 56; ear 31. 
Skull: greatest length 62°5 ; condylo-basal length 62 ; 
zygomatic breadth 29; nasals 255; orbit to gnathion 33 ; 
intertemporal breadth 12; palatal length 37; anterior palatal 
foramina 4°6 ; palatal vacuities 5°6 ; oblique length of bulla 
13°3. Dental length 33°5, front of canines to back of m! 
24°5 » ms'= 10. 
Hab. Northern Cape York. Type from Utingu, others 
from Cable Station. 
Type. Adult male. B,.M.no.15.3.5.71. Original number 
2415. Collected 20th September, 1912, by Robin Kemp. 
Fifteen specimens examined, 
Distinguishable from auratus by its comparatively long 
muzzle. 
