Family Hamacanthidae Gray, 1872

Abstract

Hamacanthidae Gray (Demospongiae, Poecilosclerida, Mycalina), including Vomerulinae Ridley & Dendy, includes eight nominal genera of which only two genera and two subgenera are considered valid. The family is defined by its possession of mycalostyles and diancistra derivatives (diancistras and cyrtancistras), c-shaped, flat or contorted, and placed near Mycalidae by their lack of tridentate chelae and restricted architectural specialization (e.g., lack of acanthostyles).