386 



MR. R. COLLETT ON NEW 



[May 20, 



on^its first third. The naked line on lower surface of the tip very 

 short. 



Length of the hody about 320 millim., of the tail about 290 millim. 



SAidl and dentition more like those of the Flying Phalangers 

 (genus Petauvistu) than of the true Phalangers of the subgenus 

 Tricliosurus, with which it has in common the bushy tail, but from 

 which it is widely different in its skull and dentition. Frontal crests 

 sharply defined from the beginning of the nasals ; the parietal crests 



Fig. 5. 



Fkalangista Innuroidea, 5- 

 Skull, seen from above. 



widely diverging backwards. Frontals forming a common angle 

 anteriorly, dividing the hind margin of the nasals. 



Teeth. — Upper jaio. The three incisors closely set; first incisor 

 long, separated by a short space from the other first incisor ; its 

 length from the maxillary is 4 millim. Second and third both 

 small, the third being the smallest. The canine small, separated by 

 a space from the incisors and the first premolar. First premolar 

 very small, separated by a short space from the second ; in size it is 

 the smallest tooth in the jaw. Second premolar only half the size 

 of the third, with two cusps ; the third has three cusps. The four 

 molars form a rather curved series, considerably converging behind. 



Lower jaw. Incisor long, its length from the mandible 8 millim., 

 horizontal ; second incisor absent ; canine none. The single pre- 

 molar rather large, but inferior in size to the true molars, and lack- 

 ing the central groove. The molars forming a slightly curved series. 



Dental formula : — m. ^, p 



I, c. 



3-3 

 1-i' 



m.| = .3-l. 



