Biemna tubulata   (Dendy,  1905) (Sponge)
Organism information awaits expert curation
Class: Demospongiae

Colour: Pale greyish-yellow (in spirit)

Sponge consisting of cylindrical, tubular processes, more or less widely open above and (sometimes, at any rate) united together below. (Possibly they may have been attached to a common body, but only fragmentary tubes are present in the collection.) Diameter of individual tubes about 6 millimeters; thickness of tube-wall about 1.25 millimeters. Outer surface slightly granular and very minutely hispid. Inner surface with numerous very minute openings of exhalant canals. Texture very soft, compressible, fragile. The main skeleton is a very irregular but close reticulation of slender styli, either isolated or in loose bundles: with no visible spongin cement. There is no special dermal skeleton.

Spicules: (1) Long slender styli; slightly curved or bent, broadly and evenly rounded off at the base, sharply and more or less gradually pointed at the apex; size about 0.28 millimeter by 0.005 millimeter.
(2) Trichodragmata; extraordinarily abundant, especially beneath the outer surface, and very variable in size, sometimes forming wisp-like fibres, sometimes breaking up into separate microxea (Plate IX., fig. 4, e); varying in length from about 0.02 millimeter upwards, and always very slender.
(3) Sigmata; also extraordinarily abundant; slender, commonly much contort, also C-shaped; occasionally in small bundles (sigmodragmata); length from bend to bend variable, say about 0.02 millimeter.

Synonym (s)
Desmacella tubulata Dendy, 1905
(Genus transfer)
Toxemna tubulata (Dendy, 1905)
(Genus transfer)

Common Name (s)
Economic Importance and Threats



• Tamil Nadu, Gulf of Mannar INDIA

Literature Source(s)
  • Tikadar, BK; Daniel, A and Subbarao, NV (1986) Sea shore animals of Andaman and Nicobar Islands The Director, ZSI, Kolkatta 188 Available at - ZSI, Pune
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -
  • Marine Biological Station, Chennai, Tamil Nadu (2003) Checklist of marine fauna of Tamil Nadu Department of Environment, Government of Tamil Nadu Available at -
  • Dendy, A. (1905) Report on the sponges collected by Professor Herdman,at Ceylon, in 1902. Report to the Government of Ceylon on the Pearl Oyster Fisheries of the Gulf of Manaar. 3(Supplement 18). Royal Society: London 57-246, pls I-X Available at -

Page last updated on:2010-06-24

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