new Insectlvores and Voles. 419 



Upper incisors vertical as in .]ficrotn.<i, not thrown forwards 

 as in Arvicohi ; first U|)por molar with five, st^conil with four 

 closed ceiniMit spaces, as usual. Third with four closed spaces, 

 fifth and sixth spaces sometimes closed and sometimes opening 

 into each other, or the sixth into the posterior C which follows ; 

 the tooth has therefore five well-marked anj^les on the inner 

 side, and five, or four and a curve, on the outer. First lower 

 molar with five angles on each side, five posterior closed spaces, 

 and a complicated anterior one ; this has two angles on each 

 side of it, the intermediate re-entrant angle very deep on the 

 inner, shallow on the outer side. 



Dimensions of the type (measured in skin) : — 



Head and body 142 mm. ; tail 100; hind foot 24; ear IG. 



Other specimens have head and body 130, 130, 140, 141, 

 and 148 mm., with tails respectively 84, itO, 92, 97, and 

 96 mm. 



iSkull : median length 30'5 ; basilar length 27; zygomatic 

 breadth 17*3; nasals 8*7 ; interorbital breadth 4'3 ; palatilar 

 length 15'4; diastema 9*5 ; palatal foramina 5*4; length of 

 upper molar series (crowns) 7. 



Ilab. iSumela (type) and Scalita, south of Trebizond. 

 Alt. 700-1300 m. 



Tf/pe. Adult female. B.i\[. no. 6. 3. G. 132. Original num- 

 ber 2114. Collected 2 November, 1905. Many specimens. 



This fine vole, distinguishable at the first glance by its 

 large size and remarkedly long tail, is evidently very common, 

 for Mr. Robert obtained a large series of it at both Sumela 

 and JScalita. No vole with these unusual proportions, a])art 

 from the Arvicola group, appears to have ever been described, 

 so that I cannot say to which it is most nearly i-elated. 



From any species of Arvicola it is at once separable by its 

 slender form, long oval skull, and purely Microtine teeth. 



1 have very great pleasure in naming this fine species in 

 lionour of its discoverer, whose labours in Asiatic Turkey 

 have been carried on in circumstances of even greater hazard 

 and difficulty than he has ever encountered in South America. 

 The fine results of his collecting-trip are a tribute to his 

 capacity for overcoming such difficulties, whether human or 

 climatic. 



Microtus (^Pitymys) Major i, sp. n. 



A long-tailed species, with extra 0{)en enamel spaces on 

 wi' and ///,. 



Size, character of fur, and colour quite as in .1/. leponticus, 

 Major. Hairs of back 9-10 mm. in length. General colour 

 above of the same mummy-biown colour as in leponticus ; 

 under surface mostly slaty grey, washed with a pale (in some 



