EUPETATJRUS. 359 



Subfamily SCIURlNvE. 



Of this subfamily, which inhabits all the great zoological regions 

 except the Australian, the following four genera occur ^\•ithin 

 Indian limits. 



A. Limbs connected by a membrane or parachute. 



a. Hypsodout : inner borders of upper molars proxi- 



mally subangulate, their upper surface flat .... Eupetaurx^s. 



b. Brachydont : inner borders of upper molars 



rounded, their upper surface irregular. 

 a . An intf^rfemoral membrane attached to the 



tail, which is bushy, not distichous Ptehomys. 



v. No interfemoral membrane ; tail distichous . . SciUROPXEBrs. 



B. Limbs free, not connected by membrane SciuKus. 



All the Indian forms of these genera (except Eupetaurns, which 

 is a recent discovery) Avere described and a full synonymy given 

 by Dr. Anderson in his ' Anatomical and Zoological Researches.' 



Genus EUPETAURUS, O. Thomas (1888). 



Hypsodont, the molars having high crowns, with the grinding- 

 surface perfectly flat and not very complicated. Upper molars 

 peculiarly shaped, the cro^\■ns almost semi-oval, with a subangular 



a b 



Fig. 120. — Crowns of right cheek-teeth of E. cinereus ; a, upper ; 



b, lower. X 1. 



apex inside, placed at the proximal extremity of each tooth, so 

 that the greatest breadth of the tooth is oblique. Interfemoral 

 membrane rudimentary or wanting. Cartilage supporting the 

 lateral membrane short. In other characters this genus resembles 

 Pteromys. 



Only a single species is known. 



226. Eupetaurus cinereus. The vjoolli/ Flying-Squirrel. 



Eupetaurus cinereus, Thomas, J. A. S. B. Ivii, pt. 2, p. 258, pis. xxii, 

 xxiii (IS'^Sj. 



Cla\vs blunt. Single metatarsal pad small, oval, isolated. Ears 

 moderate, densely hairy outside, more thinly inside the conch. 

 Fur very long, thick and soft, underfill" dense and woolly. Tail 

 cylindrical. 



