Water- Voles of Bosnia, Asia Minor, dec. 225 



make use of de Filippi's name rather than to add another to 

 a genus already overburdened. 



The British Museum possesses the skull of a Water- Vole 

 from the Altai Mountains, which, in the absence of a skin, I 

 am obliged to associate provisionally with this subspecies. 



For the Water- Vole of Bosnia I propose the name 



Microtus Musignani illyricus, subsp. n. 



A large Water- Vole intermediate between the subspecies 

 M. persicus, de Fil., and M. Musignani, de Selys, of Spain, and 

 in that the upperside lacks the almost rufous-brown tint of the 

 ordinary Spanish specimens and is grizzly yellowish brown, 

 not, however, so marked as in M. persicus. The thickness of 

 the coat also agrees with that of Spanish specimens, and not 

 with that of M. persicus. The dirty white colour of the under- 

 side is indistinctly marked off from the yellowish-brown 

 flanks, is not washed with yellow, and does not extend to the 

 upper lips or high up on the sides of the neck. 



The type (no. 94. 1. 5. 1 of the British Museum collection) 

 is from Bosnia, and was collected by Dr. Floericke. I believe 

 it represents a subspecies occurring in the Turkish peninsula 

 and which is intermediate between M. Musignani of Spain 

 and Italy and M. persicus of Asia Minor. 



The following are the dimensions of the specimens in 

 millimetres : — 



M. persicus. Brit. Mus. Coll. 



no. 97. 6. 4. 10. Adult male 



from Van, Asia Minor (dug 



out of a hole by a stream, 



Dec. 23, 1897) 195 126 29 16 42 



M . persicus. Brit. Mus. Coll. 



no. 97. 6. 4. 9. Young male 



from Van, Asia Minor (dug 



out of a hole by a stream, 



Dec. 13, 1897) 153 104 31 16 38 



M. illyricus. Brit. Mus. Coll. 



no. 94. 1. 5. 1. Bosnia. 



(Measured in dried skin.) . . 190 100 30 . . about 40 



(damaged) 



