in both jaws having blunted tubercles; head long; muzzle 

 acute; upper lip cleft; ears large; fore legs short; feet with 

 live toes ; claws sharp ; hind feet long, with four toes, two of 

 which are united and small ; tail long, thick ; hair woolly. 

 Female with an abdominal pouch. 



Potorous marinus. — The Kangaroo Rat. — Plate XV*. 

 fig. 2. — Fur brownish above, and gray beneath; ears rather laige 

 and rounded. Size of a Rabbit. Inhabits New Holland. 



Genus 9. — Kangurus — Geoffroy. 



Generic Character Incisory teeth ^, no canine teeth, grin- 

 ders |-|; total 28. The head elongated; ears large and 

 pointed ; eyes large ; fore legs very short, with five toes on tlie 

 feet, which have strong claws ; hind legs very strong and long, 

 having only four toes, the two inner small and united; the cen- 

 tral ones very large, long, and strongly clawed ; the outer toe 

 moderate ; the metatarsus very long and thin ; the soles of the 

 feet applied their whole length to the earth ; tail long, very 

 thick at the base, tapering and very strong, but not prehensile ; 

 is used to assist the animal in leaping. Female furnished with 

 an abdominal pouch, in which the teats are situated. 



Kangurus lahiatus. — The Great Kangaroo. — Plate VII. 

 fig, 11. — Described, vol. II. p. 519. 



Genus 10. — Phascolarctos. — Blainville. 



Generic Character. — Incisory teeth |, false grinders, 2**, true 

 grinders *-* ; total 28 : with four intermediate teeth between 

 the incisors and the upper grinders ; molars with four tubercles ; 

 ears large and pointed ; feet with five toes ; the fore feet parted 

 into two groups ; the thumb and index finger on one side, the 

 three others on the opposite ; hind feet with a large distinct 

 clawless thumb ; and the two inner fingers small, united to the 

 claws. 



Phascolarctos fuscus. — The Koala. — Plate XIV*. fig. 9. 

 — Fur long, thick, and harsh, of an uniform chocolate-brown 

 Size of a moderate dog. Inhabits New Holland. 



Division IV. — Incisory teeth |, without canine teetb. 



Genus 11. — Phascolomys. — Geoffioy. 

 Generic Character. — Incisory teeth \, no canine teeth, grin- 



IV. 2 T 



