Abstract
Diastopora suborbicularis Hincks (1880) is a junior subjective synonym of Alecto compacta Norman (1866). Eurystrotos gen. nov. is introduced for A. compacta, in place of Microecia Canu (1918). Diaperoecia Canu (1918) is restricted to its type species, Pustulopora intricaria Busk, from Australia. European species formerly referred to Diaperoecia are assigned to Annectocyma gen. nov., type species: Alecto major Johnston (1847). Annectocymidae fam. nov. is created for Annectocyma gen. nov. and Entalophoroecia Harmelin (1974).