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 Lanca- 

 shire the contrast in the scenery is no less striking 

 than the animal distribution. The adder is the 

 common serpent of the province, and very large 

 specimens are taken, especially in Westmoreland. 

 The inland fringing Morecambe Bay is also a habitat 

 much frequented by the species. 



