1897.] rjlOM NORTH ATJSTBALIA. 329 



Smallest specimen : length 65 ; breadth 42 mm. 



Two younger specimens, length of the skull in both 60 mm., are 

 just in the stage where the persistent p^ is pushing out the milk 

 ■p^ (which is still present). If* is just traceable in the bottom of 

 the gum. 



Hah. Common in Arnhem Land and at Roebuck Bay, but 

 nowhere very numerous. All the specimens seen were of the 

 same small size. It was much in request by the natives for 

 food. 



Native names : Uia, Uidda. 



23. PsEUDOCUiRUS DAHLi, Coll., 1895. (Plate XXIII.) 



Pseudochiriis dahli, CoUett, Zoolog. Anzeiger, no. 490, Dec. 1895, 

 p. 464 (1895). 



]S . Australia : Mary Eiver, May-June 1895 (eight specimens, 

 one young in spirit, one embryo). Union Town, Aug. 16th, 1895 

 (two specimens, one skeleton). 



There are in the collection ten specimens of this species (with 

 skull), and one skeleton, besides one young and one embryo in spirit. 



General Characters. 



Size large. Head small. Tail short (about half the length of 

 the body), tip almost naked. Ears short. 



Pur long and woolly ; colour reddish grey above ; a blackish 

 median frontal line. Tail more rufous, not white-tipped. Breast- 

 spot rufous. 



Muzzle very narrow ; meatus auditorius inflated ; orbital ridges 

 parallel and not uniting behind ; posterior palate with large 

 foramina. 



Incisors and molars strong, intermediate teeth very feeble or 

 absent. Upper f elongated horizontally, lower i^ lancet-shaped. 



Plastic Characters. 



Size large. Length of the fresh animal (tail included), according 

 to Dr. Dahl, 80-90 cm. 



(In the skin the length to the root of tail sometimes exceeds 

 450 mm., tail 270 ; together a total of about 720 mm.) 



Head proportionally very small, as well as the ears. 



Tail very short, its length in some specimens not exceeding 

 half the length of the body (head included). 



Fur very thick and woolly, much like that of P. arcJieri; the 

 tail thickly clothed on the upper half or two-thirds of its length, 

 the thick covering gradually tapering towards the tip, which is 

 almost naked (only a few short adpressed hairs), The lower part 

 of the tail entirely naked for two-thirds of its length from the tip. 



JEa7-s short and broad, long-haired on their posterior roots, more 

 thinly clothed towards their tips ; inside they are well haired 

 along the prominent folds, 



Proc. Zool. Soc— 1897, No. XXII. 22 



