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SCIENTIFIC RESULTS FROM THE MAMMAL SURVEY. 



XXVII. 



By 



Oldfield Thomas F,R,S. 



(Tuhlisheil by ijermission of the Trustees of the British Mushttm.) 

 The Geographical Races of Scotomanes oniat-as. 



In connection with the naming of specimens of Scotomanes from 

 Assam and Annam submitted to me respectively by Messrs. 

 Wronghton and Robinson, I have laid out all the available 

 material of the genus. As a result I find that though all are 

 undoubtedly verj^ closely allied, and referable to the species S. 

 omatus, yet three geographical races may be distinguished as 

 follows : — 



1. S. omatus omattis, Blyth. 



Size averaging larger, the forearm 58-60 mm., occasionally 

 reaching 68. General colour above brighter and lighter, generally 

 approximating to some tone of buffy or light ochraceus, the under- 

 fur more or less whitish subterniinalty, 



Hab. — North India. Type from Darjiling. A large number of 

 specimens examined from Sivok, Bengal. 



2. S. omatus iinbrensis, sub. sp. n. 



Size about as in omatus or rather smaller. Colour distinctly 

 darker and browner, with less or in some cases no bufFj^ suffusion, 

 the dark brown ends to the hairs forming the chief element of the 

 dorsal colour. Dark collar on throat blackish, strongly contrasted 

 with the rest of the undersurfaco. 



Eab. — Hills of Assam. Tj^pe from Konshnong, Jaintia Hills, 

 3,000'. Other specimens from Garo and Khasia Hills. 



Forearm of type 56 mm.; skull, condylo-basal length 18-2, 

 zygomatic breadth 13-5. 



%^e.— Adult male B. M. No. 20.11.1. 78. Original number 

 866, collected 2nd August 1920, by H. W. Wells. Presented by 

 the Bombay Natural History Society. 



This is evidently a dark, saturate form corresponding to the 

 exceptionally heavy rainfall of the A ssam Hills. 



3. S. omatus sinensis, sub. sp. n. 



Size smaller, forearm generally about 50-55, rarely reaching 60. 

 Colour deeper and richer, approximating to tawny or ochraceous 

 tawny. 



Forearm of type 55 mm. Skull, condylo-basal, length 18-2 ; 

 zygomatic breadth 15. 



