182 ' PHALANGERID^. 



dirty yellowish grey. Arms and legs silvery grey ; fingers (PI. XVII. 

 fig. 6) with the " pseudochirous " arrangement unusually strongly 

 marked, the first and second together widely opposable to the third, 

 fourth, and fifth. Palms with five broad striated pads. Upper 

 surface of both fingers and toes brown, rather darker than the 

 general colour of the limbs. Tail evenly tapering, silvery grey 

 basally, becoming black distally ; its under surface short-haired all 

 along, becoming gradually naked in its distal third, the naked part 

 (PI. XVII. fig. 7) smooth, transversely wrinkled, not shagreened. 



Shull very small and light. Nasals slender, little expanded 

 behind, their tips projecting about 2 or 2\ miUim. beyond their 

 junction with the ascending processes of the premaxillse ; posterior 

 nasal region convex upwards, rather vaulted. Interorbital space 

 narrow, concave, but less so than in the next species ; its edges 

 sharply ridged, but the ridges not forming postorbital processes. 

 Palatine foramina oval, reaching past the level of the back of the 

 canine. Posterior palate almost or quite perfect, back edge of palate 

 some distance behind m.^ Bullae swollen and transparent, but less 

 so than in the last species. 



Teeth small and weak, their series interrupted by wide diastemata. 

 Upper i.' about twice the length of i.° ; i.' slightly shorter horizon- 

 tally than i.'' Canine rather longer than either of the posterior 

 incisors, unusually long diastemata present both in front of and 

 • behind it. P.' slightly separated from p.', short and conical ; p.^ 

 and p.* narrow, oval in outline, the former about one half the size 

 of the latter in section. Molars very small and light. Lower teeth 

 as usual, except that there are no minute intermediate teeth at all 

 in either of the specimens examined. 



Dimensions. 



2- . 

 *(in spirit). 

 Adult, 

 millim. 



Head and body 260 



Tail 205 



Lower leg 53 



Hind foot 32 



Ear 12 



SkuU, see p. 185. 



Eah. N.W. New Guinea (Salawatti, Eamoi, &c.). 



Type in the Paris Museum. 



Of this, the oldest known species of the present group, I have 

 had the advantage of examining all the specimens as yet brought to 

 Europe, namely, the type of the species, preserved in the Paris 

 Museum, that of Ps. bersteini in the Leyden Museum, and a spirit- 

 specimen belonging to the Genoa Museum, which latter, by the 

 kindness of the Marquis G. Doria, I have had lent me for purposes 



* Specimen in the Genoa Museum. 



