APODEMUS 825 



APODEMUS HIRTENSIS Barrett-Hamilton. 



1899. Mus hirtensis Barrett-Hamilton, Proc. Zool. Soc, London, p. 81. 



Type in British Museum. 



1900. Mus sylvaticus hirtensis Barrett-Hamilton, Proc. Zool. Soc, London, 



p. 404. 



1906. Mus hirtensis Barrett-Hamilton, Ann. Scottish Nat. Hist., Edin- 

 burgh, xv, p. 3, January, 1906. 



1910. Mus sylvaticus hirtensis Trouessart, Faune Mamm. d'Europe, p. 152. 



Type locality. — Island of Saint Kilda, west of Outer Hebrides, 

 Scotland. 



Geographical distribution. — Saint Kilda. 



Diagnosis. — Similar to Apodemus hebridensis, but skull larger 

 (condylobasal length, 25-6 to 26 "8) and colour darker. 



Measurements. — Type (immature male) : head and body, 81 ; 

 tail, 85 ; hind foot, 25. Adult male and female from the type 

 locality: head and body, 107 and 110; tail, 91 and 101; hind 

 foot, 24 - 6 and 24*6 ; ear from meatus, 17 and 17. For cranial 

 measurements see Table, p. 827. 



Specimens examined. — Fifteen, all from Saint Kilda. 



'Remarks. — Although the material representing the two 

 animals is not entirely satisfactory there seems little reason to 

 doubt that Apodemus hirtensis is specifically distinct from A. 

 hebridensis. The skull, as shown by the Table of measurements, 

 is distinctly larger, while the colour appears to be somewhat 

 darker than in the Hebridean form, though of exactly the same 

 type. Notwithstanding its large size the skull retains all of the 

 characteristics of that of A. sylvaticus and A. hebridensis, showing 

 no tendency to assume the angular appearance seen in 

 A. flavicollis. 



6. Island of St. Kilda, Outer J. S. Elliott (c & p). 94. 7. 16. 1. 

 Hebrides. (Type -of species.) 



<5 and St. Kilda. (H. Evans.) G. Barrett-Hamilton 11. 1. 2. 123. 

 6 skulls. (p). 



3 S, 3 ?. St. Kilda. W. Eagle Clarke 11. 1. 24. 1-6. 



(c & p). 



APODEMUS FRIDARIENSIS Kinnear. 



1906. Mus sylvaticus fridariensis Kinnear, Ann. Scottish Nat. Hist., xv, 

 p. 48, April, 1906. Type in Boyal Scottish Museum. 



1910. Mus sylvaticus fridariensis Trouessart, Faune Mamm. d'Europe, 

 p. 150. 



Type locality. — Fair Isle, Shetland Islands, Scotland. 



Geographical distribution. — Fair Isle. 



Diagnosis. — Size as in Apodemus hirtensis or somewhat larger ; 

 skull with rostrum noticeably more slender than in any of the 

 related forms ; colour above essentially as in A. sylvaticus 

 sylvaticus, but back and sides less bright and more clouded with 



