PHASCOLARCTOS. MAMMALIA. 113 



K. Billardierii, Desm. Ears short, oval, rounded; fur gray brown 

 above, reddish beneath ; upper lip reddish. Van Dieman's Land. 



K. Brunii, Desm. Fur brown above, fawn-coloured beneath. Aroe 

 Islands Shaw, i. 402. 



K. pencillatus, Geoff. Fur above gray, with darker tints, beneath 

 rufous brown ; tail as long as the body, and tufted at the end. 

 New Holland Griff. An. King. iii. 48. 



Gen. 89. PHASCOLARCTOS, Blainmlle. 



Incisors f , false canines -, molars f-f = 28. Four inter- 

 mediate teeth between the incisors and the upper molars; 

 molars with four tubercles; ears large and pointed; feet 

 pentadactyle ; toes of the fore-feet in two groups, the thumb 

 and index finger on one side, the three others on the oppo- 

 site ; thumb of the hind-feet large, nailless ; the two next 

 toes united. 



P.juscus, Desm. The Koala, Cuv. Fur of an uniform chocolate 

 colour, long and thick. Size of a moderate dog. New Holland. 

 Cuv, Reg. An. iv. t. 1. 



Gen. 90. PHASCOLOMYS, Geoff. Cuv. Didelphis, Shaw. 



Incisors f , canines g-g, molars f-f = 24. Incisors strong and 

 thick ; molars with oval crown, divided by a furrow ; body 

 thick ; head large, flat ; ears short ; eyes much separated ; 

 feet with five toes, the anterior armed with crooked and ro- 

 bust nails for digging ; thumb of hind-feet very small, nailless ; 

 tail scarcely apparent ; an abdominal pouch in the female. 



P. wombat, Peron, Desm. The Wombat. Fur uniform grayish co- 

 lour. Size of the badger. New Holland. Desm. Mam. 276. 



ORDER VI, GLIRES, Lin. Rosores, Stoir.Rodentia, 



Cuv. 



Two large incisors in each jaw, separated from the molars by a 

 vacant space ; no canine teeth ; molars with flat crowns or 

 blunt tubercles ; extremities, the posterior longest, terminated 

 by unguiculated toes, the number varying according to the 

 species ; mammae variable in number ; stomach simple ; in- 

 testines very long. 



Section 1. With complete clavicles. 

 Gen. 91. CASTOR, Lin. Cuv. Geoff. 



Incisors f, canines g-, molars - = 20. Molars composed 

 of a flat crown, with sinuous and complicated ridges of ena- 

 mel ; five toes on each foot, the anterior short and close, the 

 VOL. r. H 



