The rare and heretofore monotypic snake-eel genus Xyrias (Jordan & Sny
der, 1901) is expanded to include X. revulsus Jordan & Snyder (1901),
Ophichthus multiserialis Norman (1939) and Ophisurus guineensis Blache
(1975). A key to the species, and diagnoses and distributional data a
re provided, including the first records of X. multiserialis from Soma
lia and X. revulsus from the Philippines and South Africa.