248 JOURNA L, BOMB A Y NATURAL HISTOR Y SOCIETY, Vol. XV III. 



blush on its under surface, thus showing a tendency to intergradation 

 in this character. 



Zetis owstoni, pp. n. 



Most nearly allied to Z. lokriah, but larger and darker coloured. 



General colour above uniform dark finely grizzled olivaceous, the 

 head, body, and limbs being all of much the same tone, though the 

 tips of the digits are blackish. Under surface broadly and con- 

 spicuously washed with yellow or orange, the bases of the hairs slaty ; 

 in the anal region this colour passes into a ferruginous patch, as in 

 several of the other species. Back of ears with dull whitish hairs, 

 not forming a prominent patch. Tail-hairs for the greater part of 

 their length finely ringed with dull bufFy or orange, their ends with 

 a broad subterminal band of black and a white tip. 



Skull with a very long muzzle, not equalling that of Z. pyrrho- 

 merus in this respect, but coming next after it, the only other squirrel 

 with a longer snout being Rhinosciurus laticaudatus. 



Dimensions of the type (measured on the skin) : — 



Head and body 235 mm. ; tail 165 ; hind foot (wet) 47 ; ear 

 (wet) 23. 



Skull : greatest length 54 ; greatest breadth 30 ; nasals 18*3 X 6*1 ; 

 interorbilal breadth 14*5 ; intertemporal breadth 16*7 ; palatilar 

 length 23*5 ; diastema 14 ; combined length of p* and m 1_3 8'6. 



Hab. — Mt. Arizan, Central Formosa. 



Type. — Old female. Original number 63. Collected 6th Decem- 

 ber, 1906, by native hunters for Mr. Alan Owston, of Yokohama. 



This distinct squirrel forms an interesting addition to the small 

 genus Zetis, and I have much pleasure in naming it in honour of 

 Mr. Alan Owston, to whom so much of our knowledge of the Japanese 

 and Chinese faunas is due. 



It would seem, as with certain other Formosan animals, to be more 



allied to the Himalayan than to the Chinese members of the group, 



as may be seen by the following rough synopsis of the species of 



Zetis : — 



A. Tail dully coloured, grizzled. 

 a. Belly -hairs yellow or orange terminally. 



a 2 . Colour grizzled brown. Nose less elongated lokriah. 



b 2 . Colour dark olivaceous, Nose much elongated... owstoni. 



