Unlucky Snake

Boidae - Gray, 1825 - 8 - 43 - Boas - Northern, Central and South America, the Caribbean, southeastern Europe and Asia Minor, Northern, Central and East Africa, Madagascar and Reunion Island, the Arabian Peninsula, Central and southwestern Asia, India and Sri Lanka, the Moluccas and New Guinea through to Melanesia and Samoa.
Bolyeriidae - Hoffstetter, 1946 - 2 - 2 - Splitjaw snakes - Mauritius.
Colubridae - Oppel, 1811 - 304 - 1938 - Typical snakes - Widespread on all continents, except Antarctica.
Cylindrophiidae - Fitzinger, 1843 - 1 - 8 - Asian pipe snakes - Sri Lanka east through Myanmar, Thailand, Cambodia, Vietnam and the Malay Archipelago to as far east as Aru Islands off the southwestern coast of New Guinea. Also found in southern China (Fujian, Hong Kong and on Hainan Island) and in Laos.