Genus Hemigellius Burton, 1932

Museums

Regional Maps

• Hemigellius Burton, M. 1932. Sponges. Discovery Reports 6: 237-392 56 figs pls 48-57 [272].

  Type species:

   Gellius rudis sensu Kirkpatrick, 1907 by original designation, see Vacelet, J. & Arnaud, F. 1972. Invertébrés marins des XIIème et XVème Expéditions Antarctiques Françaises en Terre Adélie. Marine invertebrates from Adelie Land collected by the XIIth and XVth French Antarctic Expeditions. 2. Demosponges. Téthys Supplement 4: 9-24 [20].
• Plumocolumetta Laubenfels, M.W. de 1936. A discussion of the sponge fauna of the Dry Tortugas in particular, and the West Indies in general, with material for a revision of the families and orders of the Porifera. (Tortugas Lab. Paper No. 467). Publication of the Carnegie Institution of Washington Washington 30: 1-225 22 pls 1 map [54].

  Type species:

   Gellius bidens Topsent, 1901 by original designation.

Distribution

Other Regions

Australian Antarctic Territory

Diagnosis

Massive to lobate and branching growth forms (Fig. 6A). Oscules large, with raised rims, irregularly distributed. Surface smooth when covered by the surface membrane, finely hispid if the membrane has been rubbed off. Ectosomal skeleton forms a hispid surface by a slight palisade of free spicules issuing from the ends of primary longitudinal fibres. Subectosomal region with numerous (embryonic, sensu Kirkpatrick, 1908c) holes formed by uni- to multispicular connecting secondary fibres and by the bifurcated ends of primary longitudinal fibres (Fig. 6B). Choanosomal skeleton composed of primary longitudinal multispicular fibres (Fig. 6C) whose divergent terminal parts in the subectosomal region are divided in a paniculate fashion to strengthen the surface and to form the fine hispidation that characterises the genus. Embryonic holes are well developed (Fig. 6D). Megascleres: Oxeas, slightly bent. Microscleres: sigmas with angulate and curved ends.

ID Keys

See Family Niphatidae Diagnosis

Diagnosis References

Desqueyroux-Faundez, R. & Valentine, C. 2002. Family Niphatidae Van Soest, 1980. pp. 874-890 in Hooper, J.N.A. & van Soest, R.W.M. (eds). Systema Porifera: A guide to the classification of sponges. New York : Kluwer Academic/Plenum Publishers Vol. 1. [882]

History of changes