208 THE ZOOLOGIST. 



traveller easily to detect it in a moonlight night. Very often 

 it will, either from curiosity, or in search of food, approach 

 one's pack-bags in the camp, and most bushmen accuse it of 

 eating the fat of their dried salt beef. Two young ones were 

 once brought to me by the natives. Close to Roebuck Bay, 

 Western Australia, a specimen was shot and preserved, but 

 the species did not seem to be common, as this single specimen 

 was the only one observed during five months' collecting in this 

 locality. 



Sminthopsis nitela. 

 This beautiful little species, which Prof. R. Collett, in the 

 ' Proc. Zool. Soc. of London,'* has described as new to science, 

 was brought to me by the natives on the Daly river, about sixty 

 miles from the coast. According to their evidence, it was found 

 sleeping in holes in the ground. Undoubtedly it is nocturnal in 

 its habits, like the other Dasyuridce. 



Phascologale flavipes leucogaster. 

 This occurred in the same locality as the above-mentioned 

 species. Only one specimen came under my notice, and my 

 native collectors brought it to me tied with a string round the 

 hind leg. When placed on the ground it exhibited considerable 

 agility. Presumably its habits are nocturnal. 



Petrogale concinna. "Bolwak." 



This rare little " Rock Wallaby " was met with only in two 

 places in Arnhem Land. Once on the Daly I shot a single 

 specimen on an unknown mountain on the eastern side of the 

 river, about one hundred miles from the river mouth. Subse- 

 quently I met the species in the broken granitic country around 

 Mount Gardiner, to the west of the river Mary, and there it 

 occurred in great numbers. 



Deep in the caverns and crevices amongst the colossal granite 

 boulders, where the rays of the sun never reach, the little wary 

 " Bolwak " spends the day, sleeping lightly. It is easily disturbed, 

 and will with astonishing agility flee from rock to rock. Their 

 speed and dexterity is simply marvellous, and seeing one of these 

 little wallabies running through the broken country, one might 

 almost imagine it to be the shadow of a bird flying swiftly overhead. 

 * Not yet published. — Ed. 



