FIGURE 3. Hymeniacidon torquata Topsent, 1916 in Sponges from Doumer Island, Antarctic Peninsula, with description of new species of Clathria (Axosuberites) Topsent, 1893 and Hymeniacidon Bowerbank, 1858, and a re-description of H. torquata Topsent, 1916

FIGURE 3. Hymeniacidon torquata Topsent, 1916, specimens (in conservative). A–C, MNRJ 20667; D–F, 20626; G–I, 20649. A, D, G, freshly collected specimens with a pale orange color. B, C, E, F, H, I, ethanol preserved specimens. A, pale orange specimen, white arrow point to a red alga and black arrow point to a polychaete tube; B, E, transverse section showing the cavernous choanosome; C, F, I, surface with several scattered small pores; H, damaged surface exposing cavernous choanosome.