Carcinonemertes mitsukurii Takakura 1910

Part of a mucous sheath of C. mitsukurii from Charybdis erythrodactyla from the Society Islands. Scale 0.5 mm.

Outline of basis of C. mitsukurii as seen in section. Scale 0.02 mm.

Sketch of cephalic muscle fibers in region of rhynchodaetim in C. mitsukurii. The anterior end is directed toward the bottom

Fragment of mucous sheath of C . mitsukurii from egg mass of Charybdis erythrodactyla from Society Islands. Scale 1 mm .

Mucous sheath of C. mitsukurii from egg mass of Charybdis cruciata at Hong Kong. Three crab eggs attached. Scale 1 mm.