SUMMARY OF THE INDIAN MAMMAL SURVEJ, 63 



Distribution : — 



N. cmereus, MacClelland. Type locality : — Motilmein. 



OtJier localities : — Teuasserim (M. 

 S. I.). 



Type : — Not traced. (Co-types of 

 erythrogenys, Anderson, Ind. Mus. 

 Calc. Nos. a. and b.). 

 Gen. II. — Rhizomys. 



No. 313. pruinosus, Bl. Besides the Assam species, Thomas 



has recently described senex, from 

 eastern Burma and Yunnan (A. M. N. H. (8) xvi, p. 313, 1915). 

 These two may be distinguished as follows : — 



Key to the species of Rhizomys. 

 A. — Size smaller, palatilar length of skull 



32.2 mm. ... ... ... ... I. pruinosus, Blyth. 



B. — Size larger, palatilar length of skull 



37-2 mm. ... ... ... ... 2. senex, Thos. 



Distribution : — 



1. R. pruinosus, Blyth. Type locality : — Cherrapunji, Assam 



(F. Skipwith). 



Other localities: — Khasi Hills CB. M.) 

 Co-types: — Ind. Mus. Calc, Nos. 1. 



m. and n. 



2. R. senex, Thomas. Type locality: — Yunnan. (Orii). 



Other localities : — Mountains east of 

 Bhamo (B. M.). 



Tijpe :— B. M. No. 12. 7. 25. 42. 



Gen. III. — Cannomys. 



Besides badius, Hodgs., of Nepal and castaneus, Blyth, ot 

 Teuasserim, Thomas has recently described ^pater from Mt. Popa and 

 c. plumbescens from the Shan States. These four forms may be 

 arranged in a key as follows : — 



Key to the species of Cannomys. 



A. — Size larger, condylo-basal length 49- 

 53 mm. 



a. Colour normal ... ... ... I. badiics, Hodgs. 



b. Colour paler and brighter, pinkish 



cinnamon ... 2. jjater, Thomas. 



B. — Size smaller, condylo-basal length of 

 skull 43-46 mm. 



a. Colour normal 3. cas^awews, Blyth 



h. Colour plumbeous \^. c. plumbescens, 



Thos. 



