7-i On tuio Mamviah from British Neiv Guinea. 



is said as to the colour of the tail, and the skull and tooth- 

 measurements are quite inconsistent with each other. How- 

 ever, botli upper and lower tooth-series are said to be "0*49 in." 

 (=:12"5 mm.), and if this be taken as correct the size of the 

 animal would be little larger than in U. validus, and con- 

 siderably smaller than in Lf. anak. 



Phalanger sericeus, sp. n. 



A dark brown species like Ph. carmelitce, the fur very long 

 and silky. 



Size and general characters as in Ph. carmsHtcB, to which 

 the specimen had been hitherto referred. Fur very much 

 longer than in that species (hairs of back about 38 mm. in 

 length instead of 27 or 28), exceedingly soft and silky, quite 

 unlike the rather coarse close fur of the allied species, 

 (yolour essentially as in carmeliice, chocolate-brown above and 

 pure sharply defined white below, but the brown above is 

 darker and more glossy, resulting from the comparative 

 silkiness of the hairs. The median dorsal area blacker than 

 the sides, but no defined stripe perceptil:)]e. A patch of paler 

 brown just above the base of tlie tail. Ears very small, 

 thickly clothed internally as well as externally with short 

 brown hairs. Tail with the proportions of the hairy and 

 naked portions about as in Ph. carmeliice, but the proximal 

 part of the latter is smoother and less shagreened. 



Skull and teeth very much as in Ph. carmelitce, except that 

 the secators, both above and below, are less developed, their 

 apical ridge, which has three or four distinct crenulations in 

 carmelita^, reduced above to an indistinctly bifid point, and 

 below to an undivided one. Molars rather narrower than in 

 carmelitce. Coronoid process of lower jaw rather higher 

 and less slanted backwards than in the allied species. 



Dimensions of the type (measured in skin) : — 



Head and body 456 mm.; tail 310 ; naked part of tail 

 above 170 ; hind foot (s. u.) 57. 



Skull : basal length 75 ; greatest breadth 51 ; greatest 

 diameter of upper secator 43; combined length of three 

 anterior molariform teeth 16'5. 



Bab. Owgarra, Angabunga River (near the Aroa River), 

 S.E. New Guinea. Altitude 6000'. 



Type. Adult male. B.M. no. 5. 11. 28. 23. Collected 

 30th October, 1904, by Mr. A. Meek. One specimen. 



This Phalanger was placed on arrival with Ph. carmelitce, 

 but the further material since received from Messrs. Monckton 

 and Meek shows the Angabunga specimen to represent 

 quite a distinct form. 



