Ischnochiton erythronotus (C. B. Adams, 1845), A–H: in dorsal view, showing the tegmentum color variability A specimen from Laguna Arrecifal Desterrada (CNMO4980, 15.2 mm length) B specimen from Isla Perez (CNMO4981, 93.7 mm length) C specimen from Cabaña y Playa CONANP (CNMO4983, 11.7 mm length) and D (CNMO5003, 12.9 mm length) E specimen from Cabezas entre Blanca y Pajaros (CNMO4985, 13.6 mm length) F specimen from Playa Norte (CNMO4988, 14.2 mm length) G specimen from Playa Arrecifal (CNMO4987, 15.2 mm length length) and H, in lateral view. Stenoplax bahamensis Kaas & Van Belle, 1987 I–M: in dorsal view, showing the tegmentum color variability I specimen from Playa Norte (CNMO4942, CNMO4943, 22.1 mm length) J specimen from Pared Arrecifal (CNMO4957, 24.5 mm) K Laguna Desterrada (CNMO4974, 23.4 mm length), and L and M, in dorsal and lateral view (CNMO4974, 22.8 mm length). Calloplax janeirensis (Gray, 1828) N specimen from Isla Perez (CNMO4994, 12.5 mm length), in dorsal view and O (CNMO4990, 13.4 mm length), in lateral view, SB = 1 cm.