FIGURE 20. a–b in Mycale species of the tropical Indo-West Pacific (Porifera, Demospongiae, Poecilosclerida)

FIGURE 20. a–b, Preserved type specimens of Mycale fistulata Hentschel, 1911, ZMB 4398 (a) and Mycale fistulata var. macrochela Hentschel, 1911, ZMB 4399 (b) from Southwest Australia (both are considered junior synonyms of Mycale (Arenochalina) imperfecta Baer, 1906) (photos N.J. de Voogd), c–g, Mycale (Arenochalina) imperfecta Baer, 1906, c–d, habitus of preserved specimens, c, ZMA Por. 13728 from the Seychelles (scale bar = 1 cm), d, ZMA Por. 12657 from the Seychelles (scale bar = 1 cm), e–g, light microscopic images of skeleton tracts (e and f) and rosette of anisochelae (g), e, ZMA Por. 13728 from the Seychelles, f–g, ZMA Por. 12657 from the Seychelles.