FIGURE 5 in Thorectinae (Porifera: Demospongiae: Dictyoceratida) from Northeastern Brazil: two new species and transfer of Scalarispongia cincta (Boury-Esnault, 1973) to the genus Thorecta Lendenfeld, 1888

FIGURE 5. Scalarispongia cooki sp. nov. (A) Holotype (UFPEPOR 410; arrow shows a digitiform projection); (B) Reticulated skeleton of isolated spongin fibers, showing cored primary fiber (Pf) and uncored secondary fiber (Sf); (C) Reticulated skeleton of isolated spongin fibers of digitiform projection, highlighting the secondary web (Sw); (D) Cross section of the fiber skeleton; (E) Histological section. Scale bars: A, 1 cm; B, 150 µm; C, 200 µm; D, 200 µm; E, 100 µm.