28 BRITISH SERPENTS. 
may be useful in identifying museum specimens, and 
for other reference : 
Class Repvivia. 
Order OPHIDIA. 
Sub-order CoLUBRINES. 
Family CoLuBRID.E. 
Species TROPIDONOTUS NATRIX. 
Also named— 
Natrix torquata. Coluber torquatus. 
Torquata natrie, Tropridonotus pers. 
Coluber natrin. Coluber murorum., 
Natriv vulgaris. 
<n : 
Enelish names 
Ring snake, or ringed snake. | Grass snake. 
Green snake. Common snake. 
Water snake. 
Hedge snake. 
All these terms will be found used to refer to the 
ring snake either by authors or as local names. 
