11. _Coelopeltis monspessulana_ (West Coast, Greece, and islands).
12. _Tarbophis fallax_ (West Coast, Greece and islands, Constantinople).
13. _Vipera ursinii_ (Bulgaria, Bosnia, Herzegovina, Montenegro).
14. _Vipera berus_ (Bosnia, Herzegovina, Roumania).
1. _Tropidonotus natrix_ (as far north as 60°).
6. _Coluber dione_ (south, between Volga and Ural).
7. _Coluber longissimus_ (south, Poland).
9. _Coronella austriaca_ (as far north as 57°).
13. _Vipera berus_ (as far north as 64°).
14. _Ancistrodon halys_ (south, between Volga and Ural).
Without attempting anything like a complete bibliography, we have compiled a list of faunistic works and papers dealing with the snakes of Europe:
SCHREIBER, E.: Herpetologia Europæa. Zweite Auflage, Jena, 1912, 8vo.
STEINHEIL, F.: Die Europaeischen Schlangen. Kupferdrucktafeln nach Photographien der lebenden Tiere. Jena, 1913, 4to. (in progress).
BELL, T.: A History of British Reptiles. 2nd edit., London, 1849, 8vo.
COOK, M. C.: Our Reptiles. London, 1865, 8vo.
LEIGHTON, G.: The Life-History of British Serpents. Edinburgh and London, 1901, 8vo.
GADEAU DE KERVILLE, H.: Faune de la Normandie. IV. Reptiles. Paris, 1897, 8vo.
LATASTE, F.: Essai d'une Faune Herpétologique de la Gironde. Bordeaux, 1876, 8vo.
MARTIN, R., ET ROLLINAT, R.: Vertébrés sauvages du Département de l'Indre. Paris, 1894, 8vo.
FATIO, V.: Faune des Vertébrés de la Suisse. III. Reptiles et Batraciens. Geneva and Basle, 1872, 8vo.
BOSCÁ, E.: Catalogue des Reptiles et Amphibies de la Péninsule Ibérique et des Îles Baléares (Bull. Soc. Zool. France, 1880).
BONAPARTE, C. L.: Iconografia della Fauna Italica. II. Anfibi. Rome, 1832-1841, fol.
CAMERANO, L.: Monografia degli Ofidi Italiani (Mem. Acc. Torin., [2] xxxix., 1888, and xli., 1891).
DÜRIGEN, B.: Deutschlands Amphibien und Reptilien. Magdeburg, 1890-1897, 8vo.
LEYDIG, F.: Ueber die Einheimischen Schlangen (Abh. Senck. Ges., xiii., 1883).
WERNER, F.: Die Reptilien und Amphibien Oesterreich-Ungarns und der Occupationsländer. Vienna, 1897, 8vo.
BEDRIAGA, J. DE: Die Amphibien und Reptilien Griechenlands (Bull. Soc. Nat. Mosc., 1881).
BORY DE ST. VINCENT, J. B.: Expédition Scientifique de Morée. Reptiles. Paris, 1832-1835, 4to., fol. atlas.