THE BANK MOUSE 



409 



specimens have been recorded; e.^., (i) cream-coloured, from Hertford- 

 shire, in J. Whitaker's collection ; (2) with white patch on head (D'Urban, 

 Zoologist, 1879, 26s); (3) white with pink eyes and light sandy. tint on 

 back, Essex, identified by Bartlett (RosYmg, fourn. at., 1885, 433); 

 (4) light cream with red eyes, Huntingdonshire (Bond, /ourn. cit., 1887, 

 425); (5) white female with slight rufous tinge on upper side, Bedford- 

 shire, No. 98.2.27.1 of British Museum collection. 



Geographical variation : — The following may be regarded as 

 sub-species:— (i) E. g. glareolus (Schreber) of West-Central Europe, 

 from the Baltic to the Alps and Pyrenees and from the Atlantic coast 

 to Silesia, is brighter in colour, and perhaps on the average 

 (hind foot, i6-6 to 18; condylo-basal length of skull, 23 to 246 mm.) 

 slightly larger than (2) E. g. britqmnicus. (3) E. g. suecicus (Miller) of 

 the Swedish and Finnish lowlands with the south-eastern watershed of 

 Norway, has the red mantle narrower and the sides and face greyer 

 than in E. g. glareolus. (4) E. g. istericus (Miller) of the Danube basin, 

 from Bavaria through Hungary to Rumania, and probably to Bulgaria 

 and the Black Sea coast, has also a narrow mantle, but is lighter and 

 yellower, and has the auditory bullae more abruptly inflated on the 

 inner side. (5) E. g. helveticus (Miller) of the Jura Mountains, the non- 

 Alpine parts of Switzerland, and the lower western French Alps, is a 

 pale buffy-grey form with the hind foot 17 to 19 and the condylo-basal 

 length of skull 23 to 25^4 mm. (6) E. g. saianicus (Thomas) of the 

 Syansk Mountains, Lake Baikal, is a small grey form with short brain- 

 case, hind foot 16, and condylo-basal length of skull 23 mm. 



DiMENSIO.NS IN MILLIMETRES AND WEIGHT IN GRAMMES:— 



Head and 

 body. 



Tail (with- 

 out terminal 

 hairs). 



Hind foot 



(without 



claws). 



Ear 

 (greatest 

 length). 



Weight in 

 grammes. 



SPECIMENS FROM UBIGATB, STJKBEY, CAUGHT AND MEASURED BY L. E. ADAMS.' 

 Sexually Immature oi-' Both Sexes: — 



1. Male, 20th Sept. 190a, caught running 



in lane ; juvenal pelage 



2. Male,7thOot.l90il; found dead; juvenal 



pelage 



3. Male, 25th June 1909 .... 



4. Female, 5th Aug. 1909 ; juvenal pelage 

 S Male, 17th Jan. 1909 ; juvenal pelage . 

 (i. Male, 20th Sept. 1911 ; adult pelage . 



7. Male, 21st Jan. 1909; almost adult 



pelage 



8. Male, 7th June 1911 : juvenal pelage . 



9. Male, 10th Oct. 1912 . . . . 

 10. Female, 10th Oct. 1912 



12 

 12 

 12 



13 

 9 

 12 

 20 



' Adams's results agree closely with those of other ohservers, as Hollis (MS.) in Devon, and with the 

 average for all Britain, as shown by specimens in the British Museum ; they may fairly be taken as repre- 

 sentative for the Bub'Species 6n(a7imcus. All the specimens weie dissected. 



VOL. 11. 



2 D 



