Theonella Gray, 1868

Hall, Kathryn A., Ekins, Merrick G. & Hooper, John N. A., 2014, Two new desma-less species of Theonella Gray, 1868 (Demospongiae: Astrophorida: Theonellidae), from the Great Barrier Reef, Australia, and a re-evaluation of one species assigned previously to Dercitus Gray, 1867, Zootaxa 3814 (4), pp. 451-477 : 455

Genus Theonella Gray, 1868

Rhachella Sollas, 1888

Diagnosis. with characteristics of Theonellidae ; ectosomal spicules as phyllo- to dichotriaenes; large choanosomal oxeas sometimes present; megascleres sometimes completely absent; microscleres as small, acanthose microrhabds only, sometimes curved slightly.

Type-species. Theonella swinhoei Gray, 1868 ; by monotypy ( Gray 1868).