BRITISH MAMMALS 
Barrett-Hamilton ; a sub-species of the Common Stoat, the chief differ- 
ence being a matter of colouring. 
In the Irish race the white on the upper lip is absent, and the extent 
of this colour is also much narrower on the belly and chest, its con- 
tinuity being sometimes broken on the latter. 
The measurements are rather less, whilst the white dress is seldom 
assumed in winter. 
This form also inhabits the Isle of Man. 
I am indebted to Lieut. Talbot Clifton, R.N.V.R., for kindly sending 
me a specimen from Connemara for the illustration. 
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