80(3 Mil. I. O. S. MONTAGU ON SOME 



reveal the presence of a pocket of M. a. arvalis extending along 

 the Slavonian plains. 



Q'alpa c^ca c-eca Savi, 



Tjipe locality. Italy. 



Material examined and Dimensions. Two adults (1 cJ, 1$) 

 collected by Montagu in June 1923 in l^^upjak, Croatia. 



HB. T. IIF. 



53. Adult <?, 25. 6.23. 112 24, 17 



60. „ ?, 28.0.23 122 27-5 17 



Description. Both the skulls are typical in all respects except 

 size. The skvdl dimensions throughout, and the length of the 

 hind feet, while less than those of 2\ europceus, are larger than 

 is usual in T. caca; they afford, indeed, new maxima for the 

 latter form. The mesostyles of m'2 and ?u3 exhibit in each case 

 the characteristic deeply-notched apex. 



The presence of this species in the Croat highlands tends to 

 confirm the view that its range is continuous across the Balkans, 

 extending from northern Italy and Switzerland into Asia Minor. 



Glis GLis POSTUS, subsp. n. 



Type locality. Veliki Dergonel, the Gorski Kotar, Croatia. 

 Material examined and Dimensions. Three adults (2 6 , \ $ ) 

 collected by Montagu and Cotton in July 1923 on Veliki 



Dergonel. 



HB. T. HF. E. 



65. Adult <?, 2. 7. 23 181 7Gi 31 19-5 



311.. „ (?, 2.7.23 181 171 3r5 21 



Typem. „ ?, 2.7.23 178 15U 32 20 



' Damaged. 



Description. The dorsal skin colour is yellow-grey, slightly 

 darkened b\^ the longer blackish hairs ; the tail is essentially 

 concolour with the dorsal fur. The animal in dorsal colour thus 

 differs noticeably from G. g. glis, showing no trace of the pinkish- 

 brown tint of that race, and approximates to G. g. italicus. The 

 tail of the latter, however, is characteristically darkened by heavy 

 pinkish-brown wash, and is accordingly readily distinguished 

 from that of G. g. postus. 



The dimensions of hind foot and ear are less than the average 

 dimensions of G. g. italicus, but larger than those of G. g. glis. 



The skulls are in no case complete, but examination of the 

 available fragments indicates robust cheek-teeth and a general 

 large size of the constituent bones, recalling the characteristic 

 properties of G. g. italicus. 



In view of the parallelism between the dormouse of the Croat 

 highlands and that of southern Italy, it is Avell to recall that 

 dormice from north Italy and Trieste, localities intermediate in 

 point of space, resemble neither in any Avay and are exactly 

 typical G. g. glis. 



