FIGURE 4 in First record of a living species of the genus Janulum (Class Demospongiae) in the Southern Hemisphere

FIGURE 4. Megascleres and skeletal arrangement of Janulum filholi (Topsent, 1890), unregistered, Monaco Oceanographic Museum, Station 105 (1892), 927 m: A, B. acanthose strongyles; C. thick section showing multispicular isodictyal arrangement of acanthose strongyles in the skeleton (Fig. 4B, C reproduced with permission from Redmond et al. 2013; Fig. 5d, c).