680 RODENTIA 



with postero-internal loop present in the usual small jiercentage 

 of individuals. 



Measurements. — Two adult males from Kinloch, Rannoch, 

 Perthshire : head and body, 120 and 120 ; tail, — and 43 ; hind 

 foot, 18 and 18" 6 ; ear, 12 and 12. Adult female from the same 

 locality : head and body, 121 ; tail, 46 ; hind foot, 18- 6. Two 

 adult females from Beauly, Inverness: tail, 37 and 38; hind 

 foot, 18 and 18. For cranial measurements see Table, p. 679. 



Specimens examined. — Thirteen, from the following localities in Scotland : 

 Black Island, Cromarty, 1; Elgin, 1; Dunphail, Elgin, 1; Beauly, Inver- 

 ness, 3 ; summit of Ben Nevis, Inverness, 2 ; Speam Bridge, Inverness, 1 ; 

 Stonehaven, Kincardineshire, 1 ; Kinloch, Rannoch, Perthshire, -3. 



cJ, 2 ?. Beauly, Inverness-shire, Hon. Margaret Eraser 8.1.4.1-3. 



MiCROTUS AGRESTI.S ROZIANUS Bocage. 



1865. Arvicola roiianns Bocage, Mem. Acad. Real das Sciencias de Lishoa, 



N.S., III, pt. 2, p. 7 (articles separately paged). 

 1910. Microtus agrestis rosiamis Trouessart, Fauue JIannn. d'Europe, 



p. 177. 



Tijpe locallfij. — CJeria, near Coimbra, Portugal. 



(leograjjliical dislr'dmtion. — Portugal and north-western Spain. 

 Limits of range unknown. 



Diagnosis. — Size and general appeai'ance, so far as is known,* 

 as in Microtus agrestis hailloni ; skull with auditory bulhe notice- 

 ably flattened, and so reduced in size that the greatest diameter 

 (from paroccipital process to tip of anterior spine) is contained 

 31 times instead of three times in condylobasal length ; teeth 

 relatively somewhat larger than in the other small forms. 



Colour. — Unknown (the only specimens seen have been injured 

 by long immersion in alcohol). 



Skull. — In general form the skull agrees with that of the 

 other small races of Microtus ngrestis, but it is immediately 

 recognizable by the small, slightly inflated auditory bullaj, no 

 approach to which has been seen among the considerable number 

 of skulls examined from other parts of Europe. The peculiar- 

 ities of the bulla are best seen in side view. 



* The colour of the only skin examined has been altered by the action 

 of alcohol. 



