HUMBER PROVINCE. 329 



food than short-tailed field-voles, but I have known 

 (only once) an adder take a viviparous lizard 

 while in captivity. The local name is ag-worm, or 

 perhaps it should be spelt agg-worm. 



" Ring Snake. — This does not occur anywhere in 

 the Scarborough district. I have two brought me 

 at different times, but they were both undoubtedly 

 escapes. 



" Smooth Snake. — I am not aware of its occurrence 

 locally." — W. J. Clarke (Eecorder to Scar. Field 

 Nat. Soc.) 



North Yorkshire and South Durham. 



" The ring snake is the most common here, averag- 

 ing about 16 inches long, but one was taken near 

 Darlington in 1895 measuring 21 inches. This snake 

 frequents the lower lands. The adder, which is in- 

 variably found on the moors and fells, averages 

 about 22 inches." — George Best, Bondgate, Dar- 

 lington (Hon. Sec. Darlington and Teesdale Nat. 

 Field Club). 



Yokk District. — " In my experience the adder is 

 most common in this district (York). I have seen 

 it frequently on Strensall Common, varying in 

 length from 15 to 27 inches. The ring snake is 

 not so often met with, but I have seen them about 

 3 feet in length." — Eobert Dutton, Phoenix House, 

 York. 



