404 MICROTIN.^ 



7(7. Arvicola terrestris terrestris Linnaeus. 



1758. 3Ius tcrrcslfis Linnaeus, Syst. Nat., 1, 10th ed., p. 61. 



1771. 3Ivs paludosus Linnanis, Mantissa Plantarum, pt. 2, p. 522; 



described from Sweden. 

 1827. Hypudcviis terrestris (3, ater Billberg, Syn. Faun. Scand., p. 4; 



described from Gottland, Sweden. 

 1827. HypitdcBus paludosus, /3, littoralis, Billberg, Syn. Faun. Scand., 



p. 5 ; described from Smaland, Sweden. 

 1827. HypndcBUs paludosus, y, aqualicus, Billberg, Syn. Faun. Scand., 



p. 5 ; described from South Sweden. 

 1857. Arvicola amphibivs a, Blasius, Saugethiere Deutschlands, p. 344 



(in part). 

 1910. Arvicola terrestris Miller, Proc. Biol. Soc. Washington, 23, p. 20; 



Trouessart, Faune Mamm. d'Europe, 1910, p. x; Miller, Catal. 



Mamm. W. Europe, 1912, p. 738. 



Type. — Unknown. 



Type locality. — Upsala, Sweden. 



Range. — Scandinavia, eastwards into Finland; limits of 

 range not known. 



Characters. — Size medium, hind-foot 28-31 mm., condylo- 

 basal length 36-39 mm. Colour dark, as in A. amphibius 

 amphihius. Upper parts varying between " broccoli brown " and 

 " mars brown " heavily overlaid with black, the general effect 

 where darkest not far from seal brown. Cheeks and sides of head, 

 including the ears, tinged with rusty, the suffusion usually pro- 

 ducing a decided contrast with the surrounding parts. Under 

 surface rusty ochraceous buff, sometimes almost tawny, darkened 

 by the under fur, and fading to yellowish grey upon the throat. 

 Feet hair brown to blackish brown. Tail blackish, its under 

 surface usually sprinkled with grey hairs. 



Skull distinguished from that of A. amphihius chiefly by 

 smaller size and smaller bullae. Occiput tending to be a little 

 more oblique, and the incisors a little more protruding; these 

 characters apparently better marked in some of the specimens 

 from Sweden and Esthonia than in others from S. Norway. 

 Mandibular angular processes not reduced. Cheek-teeth not 

 peculiar, but rather small and light. 



For external and cranial measurements, see tables at end ol 

 volume. 



7&. Arvicola terrestris italicus Savi. 



1839. Arvicola amphihius var. iialica Savi, Nuovo Giorn. de'Letterati, 

 Pisa, 37, No. 102, p. 202 (p. 5 of separate); for date of publication 

 see de S61ys-Longchamps, l5tudes de Micromammalogie, 1839, 

 p. 96, footnote. 



1839. Arvicola periinax Savi, Nuovo Giorn. de'Letterati, Pisa, 37, 

 No. 102, p. 203 (p. 6 of separate) ; M.S. synonym of italica. 



1845. lArvicola amphihivs var. minor de Selys-Longchamps, Atti 

 deUa sesta Riunione degli Scienziati Itahani, Milano, 1844, p. 322 

 {nomen nudum). 



