Docosaccus Topsent, 1910

Kahn, Amanda S., Geller, Jonathan B., Reiswig, Henry M. & Smith, Kenneth L., 2013, Bathydorus laniger and Docosaccus maculatus (Lyssacinosida; Hexactinellida): Two new species of glass sponge from the abyssal eastern North Pacific Ocean, Zootaxa 3646 (4), pp. 386-400 : 392

Genus Docosaccus Topsent, 1910

Type species: Docosaccus ancoratus Topsent, 1910

Genus diagnosis. Lophophytous, body sac-like or plate-like, with thin walls fixed by several tufts of anchorlike basalia or bundles of diactins surrounding a giant hexactin. Choanosomal spicules are diactins, rarely hexactins and their derivatives. Largest choanosomal spicules are hexactins with long tangential rays or rays of varying size. Dermalia are hexactins, atrialia are hexactins or pentactins. Microscleres are hexactins, hemihexasters, hexasters, floricomes, and probably discohexasters (Tabachnick 2002a: 1395–1396, emended).

Remarks. The diagnosis of the genus is emended to include the plate-like gross morphology, anchoring spicules, and atrial pentactins that occur in the new species.