Tropidonotus viperinus, Zamenis hippocrepis, Coronella girondica, Vipera latastii.
The following lists will help to elucidate the distribution of the snakes in the different parts of Europe:
I. Scandinavia
1. Tropidonotus natrix (as far north as 65°).
2. Coronella austriaca (as far north as 63°).
3. Vipera berus (as far north as 67°).
II. Great Britain
1. Tropidonotus natrix (England and Wales, extreme south-east of Scotland).
2. Coronella austriaca (Surrey, Berkshire, Hampshire, and Dorsetshire).