FIGURE 24 in Demospongiae of ANT XXIV / 2 (SYSTCO I) Expedition—Antarctic Eastern Weddell Sea

FIGURE 24. Calyx cf. arcuarius (Topsent, 1913), SMF 11815. A, habit alive, ex situ. B–D, fragments in ethanol, B, underside of fan, C, topside, D, stalk. E–F surface of the sponges upside in overview and in detail, G–H surface of the sponges underside in overview and in detail. I, skeletal section, with ectosomal arrangement at the top. J, close-up of skeletal section. K–L oxea in SEM. Scale bars: A: 30 mm, B–C: 20 mm D: 10 mm, E, G: 5 mm, F, H: 1 mm, I–J: 1 mm, K–L: 30 µm.