488 MAMMALIA. 



grinders |-«, or ^z|, grinders f-s, or f^f ; total 38 or 40. Fore- 

 head convex ; snout elongated ; feet with five toes, not united 

 to the body by the skin of the sides ; anterior toes separate, fur- 

 nished with strong crooked nails ; hind feet, with a large thumb 

 without a nail ; tail naked in some, and in others covered with 

 hair. Females with an abdominal pouch. 



Sub-Division L — Tail naked or scaly and prehensile. 



Phalangista rufa. — The Red Phalangeb. — Plate XIV*. 

 fig. 7. — Fur reddish chestnut, with a darker dorsal line. 



SuB-DivisiojJ II. — Tail hairy and prehensile. 



Phalangista Coohii — Cook's Phalanger Plate XIV*. 



fig. 8. — Described, vol. II. p. 455. 



Genus 7. — Petaurista. — Cuvier. 

 Generic Character. — Incisors |, canines J~J or }^\, grinders 

 sZe ^^ 6-fi ' *°*^^ ^^ °^ '^'^' "^^^ lower incisors are horizontal ; 

 head somewhat elongated ; eyes small ; ears long ; feet short, 

 with five toes ; the posterior with a large thumb, without a nail; 

 the two first toes short, united by a common skin ; claws com- 

 pressed and arched ; skin of the sides extending and uniting the 

 extremities, so as to form a kind of parachute ; tail long, hairy, 

 and not prehensile. 



Sub-Division I. — Tail round. 



Petaurista taguanoides. — The Flying Petaurista. — Plate 

 VII. fig. 10.— Described, vol. II. p. 455. 



Sue-Division II — Tail villous. 



Petaurista pigmcea. — The Pigmy Petaurista. — Plate XIV*. 

 fig. 10. — Fur uniform mouse-gray, somewhat reddish on the 

 back, and white underneath. Inhabits New Holland. 



Division III Incisory teeth |, the lower ones very long 



eind oblique ; canines j-^. 



Genus 8. — Potorous. — Desmarest. 



Generic Character. — Incisors ^, canines J^', grinders *j; 

 total 30. The canines are small, the four posterior grinders 



