External characters
burrowing sponge with fistulose digits emerging from substratum.
Colour
mustard yellow in life; mustard yellow in ethanol.
Skeletal Characters
| Oscules | not apparent; fistules appear blind. |
| Texture | fistules thick-walled, irregular, brittle; sponge compressible, but able to be broken cleanly. |
| Surface_Ornamentation | optically smooth, slightly velvety. |
| Ectosomal_Skeleton | palisade of oxeas connects brushes formed by primary ascending tracts. |
| Choanosomal_Skeleton | oxeas form thick, rounded meshes; meshes extend to subectosomal region; pseudo-tangential layer beneath ectosomal palisade. |
| Megascleres | thin small oxeas of a single size category and with faintly telescoped ends. |
| Microscleres | nil. |
| Mudmap_Author | P Sutcliffe |
| Mudmap_Editor | Kathryn Hall |
Distribution
In French Polynesia: Marquesas, Society, Tuamotu islands
Ecology and habitat
On rocky slope in Marquesas.
In a bay in Society.
Near the pass in Tuamotu
P Sutcliffe (2014). QM4700 Siphonodictyon sp. (OTU QM4700) . In: Hall, K.A. & Hooper, J.N.A. (2014) SpongeMaps: an online community for taxonomy and identification of sponges. (Available at http://www.spongemaps.org).

