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Show after his description was published. Dr. Collett's examples were from the Daly River, so that Alexandria is to a certain extent intermediate between the two localities. 16. S m in th op s is s t a l k e r i , sp. n. c? . 174, 175. S .W . of Alroy, 800'. A small species coloured like is. larapinta, but with more hairy soles and shorter tail. Size rather less than in S. larapinta, but neither of the two specimens is more than just adult. Fur soft and fine, about 6 mm. long on the back. General colour above more buffy than in S. larapinta, the light rings on the hairs dull cream-buff, their fine tips dark brown. Under surface creamy white, the extreme bases of the hairs slaty. Head like back, a dark line on the forehead between the eyes, not so distinct or so long as in S. larapinta. Ears of medium length, quite unlike the long ears of S. hirtipes, pale grey throughout. Upper surface of hands and feet white. Palms and soles intermediate in their characters between those of the hairy-footed S. hirtipes and of the ordinary naked-footed species ; the palms apparently with low granulated cushions, but these cannot be accurately described on dried specimens, even when re-damped ; the soles with a compound cushion at the end of the metatarsus, as in S. hirtipes, but this is naked and granulated as in other species, and has three minute non-lineated pads upon i t ; the centre of the foot is finely hairy to beyond the tip of the hallux, a few hairs even extending to the back of the large compound pad. Tail shorter than in S. larapinta, incrassated at base; finely hairy, greyish white above and below, the tip not darkened. Skull and teeth very much as in S. larapinta, the muzzle rather shorter; bullae much smaller than in S. hirtipes. Dimensions of the type, measured in the flesh :- Head and body 70 mm.; tail 65 ; hind foot 15 ; ear 17. Skull-greatest length 23*2 ; basal length 21-4; zygomatic breadth 13 ; nasals 8 ; combined length of three anterior molari-form teeth 4'7. The other specimen has head and body 72 mm.; tail 70. Type. Subadult male. B.M. No. 6.3.9.91. Original number 175. Collected 1 August, 1905. This pretty species forms an interesting link between the hairy-soled S. hirtipes Thos., described from Charlotte Waters, and the ordinary naked-soled species of the genus. Its shorter tail and more buffy colour will also distinguish it from S. larapinta. Prof. Spencer's S. psammophilus would appear to have a similar foot-structure, but is considerably larger. EXPLANATION OF PLATE X XXVII. Fig. 1. Mus forresti, p. 538. 2. Phascogale ingrami, p. 511. P r o c . Z o o l . Soc.-1906, No. XXXVII. 37 1 90G.] MAMMALS FROM NORTHERN AUSTRALIA. 5 4 3 |