The Snakes of Europe

by George Albert Boulenger

5. Vipera berus.

6. Vipera aspis (Black Forest, Lorraine).

V. France and Switzerland, exclusive of Ticino

1. Tropidonotus natrix.

2. Tropidonotus viperinus (as far north as South Brittany and Fontainebleau).

3. Zamenis gemonensis (south, locally as far north as the Sarthe and Aube).

4. Coluber longissimus (locally as far north as South Brittany, South Normandy, and Fontainebleau).

5. Coluber scalaris (Mediterranean Littoral).

6. Coronella austriaca.

7. Coronella girondica (south and west as far north as the Charente-Inférieure).