ORIENTAL FLYING SQUIRRELS. 10 i 3 



Western Himalayas produce caniceps and its allied forms, inorna- 

 tus, and bhrelli. The Simla form fulvinus seems most nearly 

 related to albiventer. 



I have treated all the forms as < species '■ the material available 

 is not sufficiently representative of the whole area dealt with to 

 enable any confident decision as to the inter-relations of the va- 

 rious forms. All that can be done is to recognise 4 groups as 

 follows : — 



(1) 'philippensis' Group India, South of the Ganges. 



(2) < albiventer ' Group Himalayas. 



(3) 'yunnanensis' Group... Assam, Gachar, N. Burma, Tenas- 



serim and Siam. 



(4) <joetaurista> Group Malaya, Sumatra, Java and Borneo. 



Key. 



I. Dorsal area grizzled, spotted, or striped with white, yellow 

 or buff. 



A. Groundcolour, at most, brownish or reddish black, never 

 rufous or ochraceous. 

 a Size larger. Hindfoot 84mm. 

 a 1 General colour "claret brown," grizzled with white. 

 a 2 Paler, tuft behind ears rufous, belly white (Madras). 



(1) philippensis, Elliot. 

 b 2 Darker, tuft behind ears black, belly 'salmon buff' 

 (Siam). 



( 2 ) tylei, Bonhote. 

 b General colour without any brown tinge. 



a 2 Ground colour drab, grizzled with buffy white, tail 



grey throughout (Tenasserim). 



(3) cineraceus, Blyth. 

 b 2 Ground colour black, washed with white, tail 



blackish (Ceylon). 



(4) lanlca, sp. n. 

 b Size smaller. Hindfoot 77. Ground colour mouse grey- 

 washed with white. Tail grey, darkening distally 

 (Bombay Presidency). 



15 



(5) cindrella, sp. n. 



