240 JOURNAL, BOMBAY NATURAL HIST. SOCIETY, Vol. XXIV. 



again into sub-species. The characters are however not very 

 important, and some variation is observable in them. But these 

 variations must to a certain extent be ignored unless we are unintel- 

 ligently to lump the whole series together, and so close our 

 eyes to the unquestionable local differentiation that exists. 



1. Oremnomys cutchicus, Wrought. 



Size little if any less than in the other species, but feet distinctly 

 smaller, only 23, 24 or 25 mm. in lengiih. Molars 5-2 to 5-4 mm. 

 Skull usually about 33 mm. in length. Colour above rather pale, 

 more buffy, less clear grey than in australis ; below the usual con- 

 dition is that the hairs of the sides of the bell}^ are grey-based, those 

 of the middle line white throughout. As a consequence the under- 

 surface is whiter than in m.edius, not so white as in australis. 

 Supraorbital crests delicate. 



Habitat. — Cutch only, the Cremnomys of Kathiawar being G. 

 medius. 34 specimens collected. 



The small feet of this species distinguish it from the other 

 members of the geniis. In colour, as might be expected from the 

 local conditions, it approaches 0. australis of the equally dry Bellary 

 area, but is not so extreme. 



2. Cremnomys medius, sp. n. 



Size averaging largest of the genus, hindfeet 26, 27, or 28 mm. 

 in length. Molars 5*4 — 5*7 mm. Skull, 34 — 35 mm. in greatest 

 length. Colour comparatively dark above. Below, the hairs are 

 generally all grey-based, resulting in a blue-grey tone. Ears 

 averaging rather larger than in C. australis. Supraorbital crests 

 generall}^ heavier than in cutchicus, lighter than in australis. 



Range. — From Kathiawar, Gujarat and S. Rajputana across to 

 Bihar and Orissa. 



Sub-species. 



2-a. Cremnomys Quedius ineddus. 



Fur rather short. General colour above comparatively dark, 

 wood-brown darkened by the black ends to the hairs. Head 

 little greyer. No specially marked nuchal patch. Undersurface 

 blue-grey throughout. 



Dimensions of the type, measured in the flesh : — 



Head and body 124 mm.; tail 148 ; hindfoot 27 ; ear 20. 

 Skull, greatest length 35 ; condylo-incisive length 30*7 ; zygo- 

 matic breadth 16-5 ; nasals 14-7 ; interorbital breadth 5*2; upper 

 molar series 5 •4, 



