FIGURE 33. Acanthochitona nigra n in New species of chitons of the superfamily Cryptoplacoidea (Mollusca: Polyplacophora) from Vietnamese waters

FIGURE 33. Acanthochitona nigra n. sp., Northern Vietnam, Gulf of Tongking, Cat Ba Id., holotype, BL 5 mm: A. Valve I, dorsal view; B. Valve V, dorsal view; C. Valve VIII, dorsal view; D. Valve IV, ventral view; E, F. Valve V, detail of tegmentum in lateropleural area; G. Valve V, rostral view; H. Valve VIII, lateral view.