RESULTS FROM THE MAMMAL SURVEY. 419^ 



-D. — The Squirrels of the Tomeutes lokroides and 

 MEjitsi Groups. 



By Oldfield Thomas, f.r.s. axd R. C, Wroughton. 



(Published hij permission of the Trustees of the British Museum.') 



The receipt of the fine series collected by Mr. Mackenzie, I.F.S.,- 

 on the Chindwin, and ^Messrs. Crump and Baptista, in Sikkim, has 

 caused ns, after a further examination, to modify the results before 

 arrived at and recorded in Vol. XXIV, p. 224, et seq. 



It is now clear that, while some classification is possible in deal- 

 ing with the summer forms, in -"vhich the characteristic thigh-patch 

 is present, the identification of specimens in winter pelage, 

 when there is no thigh-patch, is often difficult or impossible. 



The following is a key to the forms we are now able to recognize,. 

 based on their summer pelage. 



Key. 



A. Feet dark grey, thigh-patches red... lohvides group. 

 ((. No grey median line on chest and 



abdomen ... ... ... lohroides lokroides (Hodg- 



son. (Sikkim). 

 b. A grey median line on chest and 



abdomen ... ... ... lohroides oivensi, T. and 



W, (Upper Chindwin,. 

 East Bank.) 



B. Feet pale, thigh-patch white or buffy. mearsi group. 



a. Thigh-patch pure white... ... mearsi vir go, suhsTp. nov. 



(Upper Ch i n d w i n , 

 West Bank.) 



b. Thigh-patch white edged by an 



ochraceous fiush ... ... mearsi bellona, subsp. 



nov.- (Kin, Middle 

 Chindwin.) 



c. Thigh-patch buffy white ... mearsi mearsi, Bonhote. 



( Chinbyit, Lowe r 

 Chindwin.) 



T. lohroides Group . 



In the paper referred to above we recorded under the heading of 

 Tomeutes lohroides, Hodgson : '•' Sqirirrels representing this long- 

 known Nepalese and Sikkim species occm- all down the West Bank 



of the Chindwin The Upper Chindwin form does not at 



present appear to be separable from true T. lohroides. But about 

 this we shall know more when the Society's Survey Collections from 



