252 BRITISH SERPENTS. 
point of view the Isle of Man shares in the im- 
munity likewise possessed by Ireland. The value of 
this biological grouping of counties and localities is 
well shown in this province, where a very different 
state of things obtains from that which was noted 
in South and Mid-Lancashire. There snakes were 
rarely seen, civilisation having driven them elsewhere 
or exterminated them locally; but in North Lanea- 
shire the contrast im the scenery is no less striking 
than the animal distribution. The adder is the 
common serpent of the province, aud very large 
specimens are taken, especially in Westmoreland. 
The inland fringing Morecambe Bay is also a habitat 
much frequented by the species. 
