220 Zoological Society : — 



5. Belideus Ariel. 



Belidea Ariel, Gould, Proc. Zool. Soc. 1842, x. 11. 



Petaurus sciureus, Miiller, Verhand. tabl. 



Hab. Am Island. 



Female adult, with one young in the pouch. 



Dactylopsila. 



Tail elongate, slender, depressed, densely clothed with fur, with 

 the exception of the under side near the tip, which is bald and cal- 

 lous, the end rather bushy. Ears elongate, rounded, bald, except 

 at the outer sides of the base. Pupil round ? The fore-feet elon- 

 gate ; toes very slender, compressed, very unequal in length, quite 

 free; the outer and third or middle toe nearly equal, the second 

 much the longest, the fourth and fifth short, the fifth or innermost 

 the shortest. The hind-feet slender, toes compressed, the two outer 

 toes elongate, nearly equal, the two inner about half the length and 

 united. 



Skull (figs. 1, 2, 3) depressed, very broad, with very large expanded 

 zygomatic arches ; the face narrow, compressed and nearly erect on 

 the sides, tapering in front ; the palate narrow, concave. The cutting 

 teeth ^j ; the upper front elongate, projecting in front, rather taper- 

 ing and truncated at the tip ; the second and third compressed, chisel- 

 shaped, close together and to the front ; the second small, the third 

 larger ; the fourth separated from the others by a small space and 



Fig. 1. 



placed on the intermaxillary suture, compressed, curved rather like 

 a canine ; the lower front very long, projecting in front, curved, 

 rather tapering at the tip ; the second, third and fourth small, trun- 

 cated, separated from each other ; the second largest, close to the base 

 of the front tooth ; the third small, separated from the second by a 

 small space ; the fourth very small, far from the other ; and at the 

 base of the front edge of the first grinder ; in the space between the 



