pS MILLER 



Scotland, northern Sweden (Quickjock) and southern Finland (Tam- 

 merfors). Limits of range not known. 



General characters. — Size small, skull of adult about 24 mm. in 

 greatest leqgth, total length of adult animal 140-150 mm., hind foot 

 20 (18) or less; ratio of tail vertebrae to total length generally between 

 30 and 35. 



Color. — See descriptions of subspecies. 



Skull. — The skull of Evotomys hercynicus is readily distinguish- 

 able from that of other European members of the subgenus Evotomys. 

 From skulls of E. norvegicus., E. nageri and E. vasconice its small 

 size immediately separates it; while from E. rutihis it differs in 

 higher, more rounded braincase and less prominent^ rostral protuber- 

 ances. On the whole the skull perhaps most closely resembles that of 

 E. nageri., from which it is separated chiefly by smaller size and by the 

 parallel zygomata. From the skull of E. norvegicus the differently 

 shaped zygomatic arches will always sei*ve to distinguish it. Among 

 themselves the skulls of the different races show no diagnostic char- 

 acters, except in the case of E. hercynicus helvetictis. 



Teeth. — Except in their small size the teeth of Evoio7?iys hercynicus 

 present no peculiarities. 



Measuretnents. — See descriptions of subspecies. 



Specimeits exanii7tecl,. — One hundred and ninety-one. For details 

 see lists under subspecies. 



Remarks. — Evoto7nys hercy7iicus is separable from E. rutihis by 

 its long, thinly haired tail and deeper, narrower skull, and from E. 

 norvegicus ^ E. vasco77icc., and E. 7tageri by its much smaller size. 

 It is a widely distributed, j^lastic species, its extensive, nearly im- 

 broken range and great variability as compared with the other red- 

 backed mice of Europe dependent on the physiographic conformation 

 of the life zones which it inhabits. Five races are represented by the 

 material thus far brought toirether. 



EVOTOMYS HERCYNICUS HELVETICUS subsp. nov. 



1867. HypudcEics glarcoIusYxTio, Les Campagnols dii Bassin du Ldman, p. 

 28 (part). 

 Type. — Adult male (skin and skull), in British Museum, col- 

 lected at Montauban, Haute Savoie, France (near Geneva, Swit- 

 zerland) at altitude of 900 m., November 8, 1S99, by Alphonse 

 Robert. Original number, 22. 



■ That is, less far removed from base of zygomata. 



