4 BRITISH SERPENTS. 
north of Mexico!”! In Australia, too, there are 
large numbers of serpents : “first, the harmless, of 
which there are some five-and-thirty; secondly, the 
2 3. 
Fra. 1.—HEraAps OF THE THREE BRITISH SERPENTS. 
1. The Adder. 2. The Ring Snake. 3. The Smooth Snake. 
venomous, over seventy, including the sea-snakes.” 2 
Compared with such countries as these, our British 
serpents do not form a very imposing list, three 
species only being found, only one of them at all 
1 Packard. 
° Aflalo, Natural History (Vertebrates) of the British Islands. 
