EUROPEAN REDBACKED MICE IO3 



color, dark brown above, soiled white below. Feet white, distinctly 

 tinged with brown. Ears like dorsal stripe. A few very inconspicu 

 ous whitish hairs on back of ear. 



Skull. — The skull is as in typical Evotomys hercynicus. 

 Measuremejits. — Average of eighteen specimens from Waremme, 

 Belgium: total length 134; tail vertebrae 46.9 ; hind foot with claws 

 19.3; hind foot without claws 1S.3. For details see table, page 107. 

 Specimens examined, — Thirty-seven, from the following localities: 

 Belgium; Waremme, 34 (7 in alcohol). France; Dinon, Brittany, 

 I (Miller coll.) ; exact locality unknown, 2 (Miller coll.). 



Remarks. — Evotoiyiys hercynicus rubidus is distinguished from E. 

 h. hercytiicus by its darker, duller color, from E. h. brittanicus by 

 its larger hind foot, and from E. h. suecicus by its broad ill defined 

 dorsal stripe. It differs furthermore from all the other races of 

 Evotomys hercynicus in its relatively longer tail. 



While the race finds its full development in Belgium and in northern 

 France the limits of its range are still unknown. It probably occupies 

 the entire coast district of northern central Europe. 



A single specimen from Cadillac, Gironde, France ( 9 ad. no. 86- 

 9S0, R. T. Young, collector) is in many ways so peculiar that I hesi- 

 tate to refer it to Evotomys hercy7iicus rubidus or to any of the known 

 forms of the species. Taken on June 25, 1899, it represents the per- 

 fectly developed summer pelage. In general color it is a brownish 

 cinnamon rufous, becoming slightly paler and more ochraceous on the 

 sides ; ventral surface and feet solid whitish buff. Tail dull brown 

 above, whitish below. Measurements: total length, 139; head and 

 body, 96; tail vertebras, 41 ; hind foot, 19 (i8) ; ratio of tail vertebrae 

 to total length, 30. The skull is peculiar in the unusual width of the 

 incisive foramina. 



EVOTOMYS HERCYNICUS BRITTANICUS subsp. nov. 



1832. Arvicola riparius Yarrell, Proc. Zool. Soc, London, 1832, p. 109. 



May 22, 1832. NotofORD, 1825. 

 1898. Evotomys glareoliis Thomas, The Zoologist, 4th sen, 11, p. loi. March, 

 1898. Not Mus glareolus of Schreber. 



Type. — Adult female (skin and skull), no. 2944, Miller collection, 

 taken at Basingstoke, Hampshire, England, August 6, 1894, by Gerrit 

 S. Miller, Jr. 



Geographic distribution. — England and Scotland. 



General characters. — In color similar to Evoto?nys hercynicus 

 rubidus, but slightly darker. Summer pelage with red of dorsal area 



