258 O. Thomas — Eupetanrus, a new form of Flying Squirrel. [No. 3, 



EuPETAURUS ciNEREUs,* n. sp. (Plate XXII). 



Size equalling or exceeding that of the largest species of Tteromys. 

 Fur extremely long, soft, and silky. General colour uniform grizzled 

 greyish brown, the hairs of the back slaty grey for about an inch or an 

 inch and a half, then the tips of the shorter woolly hairs are a dull pale 

 grey, while those of the longer straighter hairs are ornamented with a 

 white subterminal, and a black terminal band. Ears pointed, hairy, 

 their backs black or brown, their internal surfaces grey. Upper surface 

 of parachute darker brown. Hands and feet brown or black ; palms 

 and soles thickly hairy, except on the surface of the pads ; the former 

 with three distal pads at the bases of the fingers and two large proxinal 

 pads, the latter with four distal pads, and a single internal, proximal pad. 

 Whole of under surface pale brownish grey, the hairs slate-coloured 

 basally and dirty white terminally. Tail long, cylindrical, exceedingly 

 bushy, more like that of a fox than that of a squirrel, the hairs averag- 

 ing nearly 3 inches in length ; its colour similar to that of the body, 

 but rather darker terminally. In Mr. Lydekker's specimen there is a 

 small tuft of white hairs at the extreme tip. 



Skull as described above, and as shown in detail in the figures (PI. 

 XXIII). Special attention may, however, be drawn to its comparatively 

 light and slender build, to the long muzzle, the slender frontal processes 

 of the premaxillae, the deeply concave forehead, long palatine foramina, 

 large expanded bullse, and to the very peculiar shape of the lower jaw, 

 in which the coronoid process does not rise so high as the condyle, while 

 the latter is bent up away from the angle to an unusually great extent. 

 The incisors are yellow in front, but little darker above than below. 



Dimensions : — 



Mr. Lydekker's specimen. Mr. Giles's specimen. 



Head and body ... 610 mm. ( = 24 in.) 515 mm. 



Tail ... 380 „ 480 „ 



Hind-foot ... (c.) 87 „ 85 „ 



Ear ... 28 „ 29 „ 



Skull. Basal length, (c ) 68 millim. ; greatest breadth, 46 ; nasals, 

 length, 28 ; greatest breadth 14-5, least breadth 6*5 ; interorbital breadth 

 20 ; intertemporal breadth 15*5 ; post-orbital processes, tip to tip, 34 ; 



* I had originally wished to connect with this animal the name of Mr. Giles, to 

 whose care in bringing a sknll as well as a skin we owe the possibility of appreciating 

 its natural position, and to whom therefore mammalogists have every reason to be 

 grateful. Since, however, further investigations have shewn that he was not the origi- 

 nal discoverer of the species, an honour that Mr. Mandelli or Mr. Lydekker might 

 equally claim, I consider it better to give it a name altogether impersonal in its 

 nature. 



