12. PHASCOIAECTUS. 209 



Subfamily III. PHASCOLARCTIN^. 



No tail. Muzzle short; tongue not extensile. Cteek-pouches 

 present. Caecum large, complicated. Stomaoli -with a cardiac gland. 



Bullae very high and prominent, narrow transversely. 



Teeth large. No premolars additional to p." above, or any teeth 

 at all between i.^ and p.* below. 



12. PHASCOLARCTUS. „, 



Type. 



Phasoolarctus, Blainv. Bull. Soc, PMlom. 1816, p. 116 



(misprinted 108) Ph. cinereus. 



Lipurus, Ooldf. Ms, p. 271 (1819) Ph. cinereus. 



Morodactylus, Goldf. Zool. ii. p, 445 (1820) Ph. cinereus. 



Size large ; form very stout and clumsy. Fur thick and woolly. 

 Ears large, thickly furry outside and in ; metatragus almost obsolete. 

 Flanks without a flying-membrane. Fore toes subequal, their 

 lengths in the following relative order — 4, 3, 5,2,1; the first and 

 second opposable to the other three; palms and soles granulated, 

 without striated pads. Claws thick, strong, and sharply pointed. 

 Tail rudimentary, only represented externally by a low rounded 

 projection. Mammae 2. 



Shull oblong, parallel-sided, the zygomata running straight 

 backwards from their broadest point at the orbits, not curved 

 outwards. Nasals short and very broad, scarcely projecting in 

 front beyond the ascending processes of the premaxillae. Inter- 

 orbital region smooth and flat, its edges rounded, and forming 

 rudimentary blunt postorbital processes, supported in old age upon 

 large rounded inflations.' Anterior palate deeply concave ; the short 

 palatine foramina placed at the bottom of the concavity opposite the 

 canines. Posterior palate with a pair of large smoothly rounded 

 vacuities confined to the palatine bones. Bull® remarkably high 

 and prominent, not unhke those of a pig in general shape, their 

 height above the basi-occipital- slightly exceeding their antero- 

 posterior, and about twice their transverse diameter, their promi- 

 nence increasing markedly with age. Lower jaw generally with a 

 minute foramen from the masseteric fossa to the inferior dental 

 canal. 



Eibs only 11 in number, the total number of thoracico-lumbar 

 vertebrae being stiU, however, 19 as usual. 



BmtUi.n'.-l. \^^, C. \, P. f^i^^ M ^t|4^'x2=30. 



Upper incisors cylindrical : i.' long, more parallel to its fellow, 

 and more rodent-like than in the previous genera ; crown of i.^ in 

 youth nearly equal to i.' in section, but in adult life the crown is 



* Dr . CoUett has recorded the presence of a fifth lower molar on both sides 

 of a specimen obtained in Queensland by Dr. Lumholtz (fcc. infrd, cit.). 



P 



