730 



RODENTIA— MURID^ 



CRANIAL DIMENSIONS OF A. f. thuleo. 

 (Arranged for comparison with the Table at pp. 538 and 539.) 



History and Status : — The material upon which this sub-species was 

 based consists of thirty-seven specimens collected for Dr Eagle Clarke, 

 chiefly by Mr W. H. Greenaway. Foula lies out in the Atlantic i6 

 miles west of the nearest point of the mainland of Shetland. It is 

 3 miles long and i| miles broad, with an area of little more than 

 5 square miles. Rising from the sea in lofty cliffs, which swarm 

 with sea-fowl during the breeding season, its highest point attains 

 an altitude of 1372 feet. Mr Greenaway found the mice, which are 

 termed " Hill Mice " by the inhabitants, on rough ground from the 

 foot of the hills up to 1000 feet above sea-level, and remarks that it is 

 surprising how they survive the storms and trials of the Foula winter. 



