132 PHAXANQEEIB^. 



6'. Upper p.° minute or atsent. P.* 



with its axis obliquely twisted 



outwards. Molars with, blunt 



rounded cusps. 



a*. Upper canine shorter than 



any of the incisors, and 



placed some distance behind 



1.S 10. Tbichosttbus, p. 184. 



b*. Canine longer at least than 

 the posterior, and generally 

 than any of the incisors, close 



to i.' ; 11. Phalangbe, p. 193. 



c. BuUse very high and prominent, their 

 vertical about equal to their hori- 

 zontal diameter. No teeth present 

 between p.* and the canine above or 

 i.' below Phascolarctinae. ' 



c\ Dentition: I. j-^, 0. i, P. °;o.'o.4 , 



M. i^4-44=30 12. Phascolabctot, 



^•^•^•* [p. 209. 



Subfamily I. TARSIPEDINiB. 



TaU long. Snout very, long and slender ; tongue extensile. No 

 csecum. Cheek-teetli minute, rudimentary. 



1. TARSIPES. ^yp^ 



Tarsipes, Qei-v. §■ Verr. P. Z. S. 1842, p. 1 T. rostratus. 



Size small ; form slender. Head long and narrow ; muzzle elon- 

 gated ; tongue long, extensile. Ears medium, thinly haired. Paims 

 and soles naked, granulated ; claws of all the fingers and toes rudi- 

 mentary, except those on the syndactylous second and third hind 

 digits, where they are well developed. Pouch present. Tail very 

 long, thinly haired ; prehensile. Walls of combined urogenital and 

 anal openings prolonged downwards as a distinct elongated tube 

 opening antero-terminaUy, and forming a sort of external 

 cloaca. 



Skull very slight and delicate. Supraorbital edges not ridged. 

 Palate very imperfect. Presphenoid surface of brain-case in front 

 of bullae p^'ominently inflated downwards, so as to give the appear- 

 ance of a second anterior pair of buUse in the dried skull ; but 

 these prominences are not shut off from the brain-cavity, and are in 

 the fresh subject filled with brain-substance. Zygomata slender 

 and thread-like ; the malar sending a long posterior branch down- 

 wards and backwards, abutting against the surface of the bulla-like 

 prominences. True buUse large, prominent, transparent. Lower 

 jaw very slender, without ooronoid or angular processes. 



