Stoichactiidae whose pedal disc is well developed, but narrower than the oral, which is sometimes strongly lobed. Column with more or less distinct verrucae, which, however, may be absent. Sphincter restricted to circumscript, usually not strong. Tentacles wart-like, digitiform or subulate, short. Only one tentacle per exocoel; usually more than one row per endocoel. Number of siphonoglyphs and directives variable. Some species of the genus are commensal with crustaceans and fishes and reach an enormous size. Cnidom: see family.
S. kenti Haddon and Shackleton 1893
Priapus giganteum Forskal 1775
Actinia tapetum Ehrenberg 1834
?Homactis rupicola Verrill 1869
Discosoma ambonensis Kwietniewski 1897
S. haddoni Saville Kent 1893
Actinia helianthus Ellis 1767
S. laevis Lager 1911
S. intermedia Lager 1911
S. australis Lager 1911
Definitions and contained taxa are those of Oscar Carlgren as published in 1949 : Kungl Svenska Vetenskapsakadamiens Handlingar, Series 4, Volume 1, Number 1
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