

l82 DR. F. A. JENTINK. MAMMALS. 



condition. Compared with the same parts in Lorentzii very striking in Nouhuysii is the larger 

 thyroid foramen, further the much less rounded posterior margin of the ischium, the not 

 concave anterior margin of the same bone, the smaller tuberosity of ischium and the some- 

 what concave marsupial bones. 



Phascogale naso Jentink. 



N°. 326. Old cf. Hellwig Mts. (+ 2000 m.), October 16, iyog (skin and skeleton). 



Described in „Notes from the Leyden Muséum", 191 1, p. 236. 



mm. mm. 



head and body 145 skull : basai length 32 



tail 145 greatest breadth 19.5 



ear 16 palatal length 19 



hind foot 27 length of molars 1 — 3 ... 5.5 



By far the smallest of ail hitherto known New Guinea species, with exception of 

 melanura Thomas: ail the teeth are présent and more or less worn. 



The silky hairs of back from between the ears, as well as those along the flanks are 

 of a fine brownish colour, mouse-coloured at the base and intermixed with some whitish hairs ; 

 hair of underparts at the base mouse-coloured, with dirty white tips; upperparts of head of a 

 sooty black ; hairs generally much shorter than in Lorentzii, although not at ail adpressed 

 like in Nouliuysii. Tail with adpressed rather short brownish hairs, its basai part however 

 adorned with a sharply defined ring of much longer hairs for about ten millimeters. Hairs 

 of hands and feet of a sooty colour, extending over the small curved claws. The anterior pair 

 of upper incisors is separated from the other incisors by a very conspicuous interval; 

 they are rather sloping; the second and third upperpremolars are of the same size and shape, 

 while in Lorentzii and Nouhuysii the third upper premolar is a good deal smaller than 

 the second one ; in the lower jaw likewise the second and third premolars are of the same 

 size and shape, while in Lorentzii and Nouhuysii the third lower premolar is very small, 

 the second being more than twice longer and broader. Nasalia broadly crested and slightly 

 curved, so that a kind of small ram's nose is imitated, giving to the head of the animal a 

 peculiar aspect, quite différent from that of the other Phascogale-species; therefore I proposed 

 the spécifie title „uaso". 



The skeleton has the vertebrae as follows: thoracic 13, lumbar 6, sacral 2 and 

 caudal 25 ; exactly like Lorentzii and Nouhuysii. The sternum has a not keeled presternum, 

 somewhat expanded near the front for the attachment of the first pair of sternal ribs, a 

 mesosternum with four elongated segments, the fourth however conspicuously shorter and 

 broader, and a xiphisternum as long as the second and third segments together, somewhat 

 broader at its anterior extremity and ending in a rather broad and flat cartilage. The sixth 

 rib is implanted at two thirds of the fourth segment of the mesosternum, the seventh rib at 

 the junction of the fourth segment of the mesosternum and the xiphisternum. The pelvis 

 présents generally the form as in Nouhuysii, especially by the enormous thyroid foramen 



