Scyphidium Schulze, 1900

Reiswig, Henry M., Dohrmann, Martin, Kelly, Michelle, Mills, Sadie, Schupp, Peter J. & Woerheide, Gert, 2021, Rossellid glass sponges (Porifera, Hexactinellida) from New Zealand waters, with description of one new genus and six new species, ZooKeys 1060, pp. 33-84 : 33

Scyphidium Schulze, 1900

Diagnosis.

Body is saccular, basiphytous, sometimes rhizophytous. Choanosomal skeleton is composed of diactins. Hypodermal spicules, if present, are pentactins. Prostalia , if present, are hypodermal pentactins and/or diactins. Dermalia are stauractins and/or pentactins in various combinations. Atrialia are mainly hexactins. Microscleres are discohexasters and oxyhexasters often with hemioxyhexasters and oxyhexactins; with two or three types of discohexasters, none as calycocomes. Among the larger is a spherical form with a restricted number of secondary rays (emended from Tabachnick 2002).

Remarks.

The genus diagnosis is emended of necessity, to accept S. australiense Tabachnick, Janussen & Menschenina, 2008 and S. variospinosum sp. nov., described below.

Type species.

Scyphidium septentrionale Schulze, 1900.