N.B.: published in the index of
Simon, 1873a: 11, it is presumably a lapsus for
Adonea, which is described on p. 157 and missing in the index; furthermore
Lehtinen, 1967: 208 listed
Amathia as a synonym of
Adonea;
Amathia is preoccupied in Bryozoa by Lamouroux, 1812 and at least four other times (see
Lehtinen, 1967: 211).