442 MURID^— AGRESTIS 



Muck have been for a very long period separated from each other, and 

 that Muck has been in connection with the mainland more recently 

 than most of the other islands. 



THE COMMON GRASS MOUSE. 



MICROTUS HIRTUS (Bellamy). 

 MICROTUS HIRTUS HIRTUS (Bellamy). 



1769. Mus TERRESTRIS, John Berkenhout, Outlines of the Natural History of Great 



Britain and Ireland, i., 5 (part); not Mus terrestris of Linnaeus {\Tl%)= Arvicola 



terrestris. 

 1807. Mus ARVALIS, W. Turton, British Fauna, 12 (part) ; Bingley ; Donovan ; not 



Mus arvalis of Pallas, 1778. 

 1828. Arvicola agrestis, John Fleming, A History of British Animals, 23 (part) ; 



Yarrell, Proc. Zool. Soc, London, 1832, 109 ; Jenyns ; Bell, edd. i and 2 ; 



MacGillivray ; de Selys-Longchamps ; Owen ; Morris, Cat. Brit. Pass., ed. 2, 



•854) 357; Sant'brd, Quart, fourn. Geo!. Soc, xxvi., 1870, 124; Blackmore and 



Alston ; Lydekker, Cat. Foss. Mavim. Brit. Mus., i., 232 ; Flower and Lydekker ; 



Winge ; Lataste, Le Naturaliste, 15th October 1883, 349. 

 1839. Arvicola hirta, J. C. Bellamy, Natural History of South Devon, 373 ; 



described from Yealmpton, Devonshire, England. 

 1841. Arvicola arvalis, Leonard Jenyns, Ann. and Mag. Nat. Hist, June 1841, 



269 (part). 

 1847. Arvicola britannicus, E. de S^lys-Longchamps, /?^z/«« Zoologigue (Pans), 



307, October ; described from England and Scotland ; also, Atti delta Ottava 



Riunione degli Sci. Ital. (Genoa, 1846), 495, 1847. 

 1857. Arvicola agrestis (b.), Arvicola neglecta, J. H Blasius, Sdugethiere 



Deutschlands, 369 (part) 

 1883. MiCROTUS agrestis, a. Smith Woodward and C. D. Sherbom (part); 



Lydekker ; Barrett-Hamilton, Proc. Zool, Soc., London 1896, 602 ; Aflalo ; Johnston ; 



Thomas, Zoologist, 1898, 264 ; Millais ; Pycraft, Guide to British Vertebrates; 



Trouessart. 

 1896. MICROTUS agrestis neglectus ; G. E. H. Barrett-Hamilton, Proc. Zool. Soc, 



London, 602 (part) ; Trouessart (part) 



1912. MiCROTUS AGRESTIS HIRTUS, G. S. Miller, Catalogue of the Mammals of 

 Western Europe, 673. 



1913. MiCROTUS HIRTUS, G. E. H. Barrett-Hamilton and M. A. C. Hinton, Proc. 

 Zool. Soc, London, 834. 



Le Campagnol of the French ; Die Erdviaus of the Germans. 



The synonymy is that of the British form of M. hirtus. The older 

 names, having been applied before segregation had taken place, include 

 more than one form. The use of the specific name arvalis is due to 

 confusion with the common continental species of that name, and 

 britannicus arose from the same error, de S61ys-Longchamps having 

 believed his britannicus to be the British representative of arvalis, with 

 which alone he compared it. There can be no doubt about the applica- 

 tion of the word hirtus, once the south British Grass Mouse is accepted 

 as a distinct form. 



