44 



Mr. G. E. H. Barrett-Hamilton on the 



Sixteen males. 



Length of Breadth 

 Hind foot skull (ba- of skull 



Head and (without sion to at 



body. Tail, claws). Ear. gnathion). zygoma. 



Maximum .... 235 65 36 16 41 25 



Mean 214 60 32 15-5 37 23 



Minimum .... 203 53 29 15 36-5 21-5 



Eight females. 



Maximum .... 195 50 28 13 34 19 



Mean 178 44 25 12 33 17 



Minimum .... 160 36 22 11 31 16-5 



Two immature females. 



Hind foot 

 Head and (without 



body. Tail. claws). Ear. 

 Boxmoor, Herts {A. Piffird), 15th 



May, 1893 146 37 24 



Bletchingley, Surrey ( W. R. Oyil- 



z)ie GranC), 6th Aug., 1895 .... 150 43 21 13 



The dimensions given would seem to show that the 

 British weasel is a variable species not only in the colour of 

 its underside, but also in its size. The ratio of the length of 

 the tail to that of the head and body is about 1 : 4. 



We have also specimens of this subspecies collected by 

 Mr. Oldfield Thomas in the Forest of Guinnes, Pas de Calais, 

 France, from Ilaida in Bohemia, and from Burgheim in 

 Bavaria, of which the dimensions are : — 



Length of Breadth 

 Hind foot skull (ba- of skull 



Head and (without sion to at 



body. Tail, claws). Ear. gnathion). zygoma. 

 No. 94. 6. 6. 10. J, Pas de 



Calais 212 58 30 .. 37 21 



No. 94. 6. 6. 11. Same locaUty, 



J , 27th May, 1894 209 60 31 



A , Haida, Bohemia, 13th Feb., 



1896 (not white) 210 52 32 9 



cJ, Burgheim, Bavaria, 29th 

 April, 1895 (a small faded skin, 

 not white) 160 40 21 . . about .38 



Three unsexed skins from Cs. Somoja, in Western Hungary, 

 may possibly be summer examples of P. nivalis fypicus. 

 The dimensions of tail and hind feet taken from these (dried 

 skins) reach 62 and 25, b5 and 30, and 72 and 30 millini. 

 respectively. 



Distribution. Western and Central Europe. 



