( 39f) ) 



llab. Grant Range, S.A\'. jiart of Kimberle)' District, North- Western Australia. 



Type. Old male. B.M. No. U.O.l.l. Collected bv J. T. Tunney. 



The whole of these red forms of the Macroj'US rohustus gronp were unknown 

 when the catalogne of Marsupials was published, so that the imperfect type skin 

 of M. isabelli/iu/s was not unnaturally considered to be related to M. ru/iis, but 

 there is now no doubt that it is a stunted insular form of the same group. To 

 Mr. Woodward alone is due the credit of this very considerable increase in our 

 knowledge of the Western Macropodidw ; the verification of the occurrence 

 of M. ruj'iis in Western Australia, the discovery of both J/, rohustus cervinus 

 and woodivardi, and the more accurate knowledge of M. imhdlinus, are all due 

 to Mr. Woodward. 



Still farther uoith-eastwards from the range of the present animal, in the 

 Northern Territory of South Australia, occurs M. antilopinus (Gould), which is 

 of a somewhat similar colour and general appearance, but differs markedly 

 by the peculiar inflation of the sides of the mnzzle. The hair of its nape 

 slopes imiformly backwards. 



Perameles barrowensis sp. nov. 



A small insular representative of the continental P. obcsula. 



Size markedly smaller than in P. obesula. General colour, strongly lined black 

 and bnffy, the individnal hairs grey, basally darkening to black, which latter may 

 be either continued to the tip or replaced by bnffy ; woolly nnderfur grey 

 basally, whiter terminally. Head like back, or slightly darker ; ujiper lip 

 whitish ; no darker markings round eyes. Ears short, rounded, closely covered 

 with fine, bnffy hairs. Uudersurface dull whitish, not sharply defined, the 

 hairs whitish to their roots. Arms externally like body, darkening to brown 

 on the metacarpals ; the digits white. Hind-limbs similar, but the digits also 

 brown. Tail of medium length, grizzled brown above, whitish below. 



Skull, although conspicuously smaller, agreeing in all details with that of 

 P. obesula, and differing from that of P. macrura by all the characters used 

 in the Catalogue to distinguish the two forms. The ]>alatal vacuities are 

 perhaps even more developed than in P. obesula, and the zygomata and angular 

 processes of the mandible are a little more slender in proportion. 



The teeth also agree in general characters with those of P. obesula, but 

 the molars are rather less hypsodont and retain their cusps longer, those of the 

 oldest specimen not being yet worn flat. The last upper molar has its posterior 

 accessory cusp (piite minute. 



Dimensions of the type. — Head and body, 270 ; tail, 108 ; hind-foot (s.u.), 

 44 ; ear, 22 ; skull, basal length, 52o ; greatest breadth, 27 ; nasals, 25 by 4-8 ; 

 inter-temporal breadth, 10-2 ; palate, length, 32 ; breadth between outer corners 

 of penultimate molars, 10 ; breadth between inner edges of tlie same teeth, 10-2 ; 

 length of j)alatal foramina, 4-7 ; front of canine to back of last molar, 21-5 ; 

 combined length of three anterior molariform teeth, 9. 



Type. JIale. B.M. No. 1.5.2.6. Original number, 3290 ; collected 

 6th November, 1900, by Mr. J. T. Tunney. 



It will be seen, on comparing the above measurements with those given in 

 the Catalogue (p. 249), that the present species is decidedly the smallest of 

 all known bandicoots, and may be readily distinguished by size alone from all 

 its allies. 



