FIGURE 3 in New species of the genera Havelockia and Thyone (Echinodermata: Holothuroidea) and first record of T. crassidisca from the southwestern Atlantic Ocean

FIGURE 3. (A–E) Thyone florianoi sp. nov., holotype (MZUSP 1351). (A) Specimen preserved in ethanol. (B) Calcareous ring. (C) Retractor muscle (black arrow) and insertion point of the muscle into the calcareous ring (white arrow). (D) Madreporite (black arrow) and stone canal (white arrow). (E) Polian vesicle (white arrow). Scale bars: A, 5 mm. B–C, 2.5 mm. D–E, 2 mm.