Genus Clathria Schmidt, 1862

Definition. Microcioninae with auxiliary styles in one or two categories forming various ectosomal structures ranging from membranous paratangential to a dense erect palisade of brushes; choanosomal skeleton wellstructured, hymedesmioid to reticulate, with mostly smooth styles enclosed within spongin fibres and fibres echinated by mostly acanthose smaller styles (Hooper 2002).