44 



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



Sixteen males. 



Leiiprth of Breadth 

 Hind foot skull (ba- of skull 



Head and (witliout siou to at 



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



Maximum .... 235 6.5 30 10 41 25 



Mean 214 60 32 155 37 23 



Minimum 208 53 29 15 30-5 21-5 



Eight females. 



Maximum .... 195 50 28 13 34 19 



Mean 178 44 25 12 33 17 



Minimum .... 100 36 22 11 31 16-o 



Two immature females. 



Hind foot 

 Head and (without 



body. Tail. claws). Ear. 

 Boxmoor, Herts {A. Piffird), 15th 



May, 1893 146 37 24 



Bletchinjzley, Surrey {W. R. Ogil- 



vj> (?;W), 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. 0. G. 10. J, Pas de 



Calais 212 58 30 ., 37 21 



No. 94. 6. 6. 11. Same locahty, 



J , 27th May, 1894 209 60 31 



A , Haida, Bohemia, 13th Feb., 



1890 (not whit9) 210 52 32 9 



cJ, Burgheim, Bayaria, 29th 

 April, 1895 (a small faded skin, 

 not white) 150 40 21 . . about P,8 



1'hree unsexed skins from Cs. Somoja, in Western Hungary, 

 may possibly be summer examples of P. nivalis typicus. 

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

 skins) reach 62 and 25, bb and 30, and 72 and 30 millim. 

 respectively. 



Diitribudon. Western and Central Europe. 



