{_Hydrus_ } {_Thalassophis_} {_Acalyptophis_} {_Hydrelaps_ } Persian Gulf, Indian Ocean, {_Hydrophis_ } Bay of Bengal, Straits {_Hydrophiinæ_ {_Distira_ } of Malacca, China Sea, { {_Enhydris_ } Philippines, and Malay { {_Enhydrina_ } Archipelago. { {_Aipysurus_ } { {_Platurus_ } { COLUBRIDÆ { {India, Ceylon, Burma, { {_Bungarus_ { Indo-China, Southern China, { { { Dutch Indies, Borneo. { { {India, Ceylon, Burma, { {_Naja_ { Indo-China, Dutch Indies, { { { Philippines. {_Elapinæ_ {_Hemibungarus_ {South-eastern Asia, India, { { Japan, Philippines. { {South-eastern Asia, India, {_Callophis_ { Formosa, Burma, Indo- { { China, Southern China. {_Doliophis_ {Indo-China, Malay Peninsula. { { {Turkestan, Ural, Siberia, { {_Vipera_ { Caucasus, Persia, Armenia, { { { Western China, { { { India, Ceylon, Himalayas. { { { _Viperinæ_ {_Pseudocerastes_ Persia. { {_Cerastes_ Arabia, Palestine. { { { {_Echis_ {Persia, Arabia, India, Baluchistan, VIPERIDÆ { { Afghanistan. { { { {Transcaspia, Turkestan, { { { Himalayas, Southern { {_Ancistrodon_ { China, Formosa, Japan, {_Crotalinæ_ { { Ceylon, Java. { { { { {South-eastern Asia, India, { {_Lachesis_ { Southern China, Indo-China, { { { Formosa, Sumatra. (3) _AFRICA._