NORTH WALES PROVINCE. ' 315 



Carnarvon and Anglesey. 



" 1 have seen adders in both these counties a good 

 many times, and though I once saw a grass snake 

 (Tropidonotus noirix) at Barmouth, I do not think 

 this species is common in North Wales. I have 

 never heard of the smooth snake in Wales at all." 

 — Chas. Oldham, Knutsford. 



Denbigh. 



" Botli adders and ring snakes are fairly common 

 here, the latter predominating. I should estimate 

 the average length of the adder at 2 feet, that of 

 the ring snake 4 feet." — W. B. Eussell, M.B., 

 Colwyn Bay, Denbigh. 



" Both adders and ring snakes occur here, and both 

 species grow to considerable size. A ring snake in my 

 garden I estimated at about 5 feet. I have heard of 

 one 72 inches, which was killed in a cluster of ring 

 snakes — 17 altogether — on a warm day in March." — 

 W. B. Halhed, Brynderwen, nr. Llanrwst. 



Denbigh and Flint. 



" On the border of these two counties, between Mold 

 and Kuthin, where I have resided for forty years, the 

 adder is fairly numerous. Our geological formation is 

 Upper Silurian mountain limestone and outcrops of 

 coal-measures. The adder is chiefly found on the 



