868 MR. I. G. S. MONTAGU ON SOME 



narrower than tliose of IC- g. nageri, the diastema is long, and the 

 incisive foramina are of great length. The length of the sknll 

 from tlie condyle to the anterior end of the bulla is 9'25 mm. 

 In the largest specimens of U. glareolus this dimension attains 

 only 8'()5 mm., and in E. cccsarius only 8-() mm. The enamel 

 pattern of the teeth exactly resembles that of a typical E . ylu- 

 reolus, in which the third re-entrant angle ou the inner side of 

 ?h3 is present. 



MiCROTUS AGRE3TIS FUNCTUS, Subsp. n. 



Type locality. Bled, Slovenia. 



Material examined and Dimensions. One young adult (?) 

 collected by Cotton in June 1923 in Bled. 



HI J. T. HF. E. 



a>^e 304. Young adult ?, 10. 6.'23 87 37 19 12 



Description. The dorsal colour is almost black, relieved on the 

 shoulders and face by a slight tawny peppering. In this respect 

 the animal nearly resembles young specimens of M. a, le.vernedii. 

 In M. a. levernedii, however, the Hanks shade gradually into tiie 

 ventral greyish-yellow wash; in the present specimen the Hanks 

 are tawjiy, and readily contrast with the ventral white. The 

 white of the belly, though interrupted here and there by the 

 appearance of the slaty bases of the hairs, shows no trace of 

 yellow. The tail is bicoloured and the feet dark. 



Measurements of the reconstructed skull indicate the presence 

 of a long brain-case like that of M. a. levernedii. The skull pre- 

 sents a unique chai'acter in that the anterior edge of the mas- 

 seteric plate is inclined forward. The distance from the incisors 

 to the lower anterior corner of the plate is accordingly less than 

 in similarly sized skulls of other forms. The pattern of the teeth 

 is that of typical M. ayi'estis, in which the fourth inner angle of 

 tnl is not present. 



MiCROTUS ARVALIS ARYALIS PallaS. 



Type locality. Germany. 



Material examined and Dimensions. Seven adults ( $ ) collecte.l 

 by Martino in August and September 1921 in I^ova Gi-adisc.i, 

 Croatia. 



21.12.1.8. Adult ?, 17.8.21. 



21.12.1.9. „ $,17.8.21. 



21.12.1.10. „ ?, 17.8.21. 



21.12.1.11. „ $,17.8.21. 



21.12.1.12. „ ? , 12. 9. 21. 



21.12.1.13. „ ?, 15.9.21. 

 21.12.1.11. „ $,16.9.21. 

 Average of .seven adults 



