364 



CHAPTER XXXIII. 



TABLE OF AVERAGE LENGTHS OF ADDERS AND 

 RING SNAKES IN COUNTIES AND DISTRICTS. 



The following table of the average lengths of the 

 ring snake and adder in the various biological 

 provinces has been prepared from the mass of 

 correspondence in my possession relating to the 

 local distribution of British serpents. The name 

 of the observer in each case is appended : — 



TROPIDONOTUS NATRIX, or RING SNAKE. 



I. Peninsula Province. 



