Planocera tridentata Hyman 1953

Planocera tridentata Hyman, 1953 Planocera tridentata Hyman, 1953b: 188–191, 203–205, figs 5–7 (type locality: Gardner Bay, Española Island, Galapagos Archipelago, Ecuador). Distribution Gardner Bay, Española Island, Galapagos Archipelago, Ecuador. Habitat Benthic. Remarks The species is characterized by a circular body with indeterminate, apparently translucent dorsal coloration, cerebral eyes distributed in two groups and arranged in a line, and tentacular eyes located at the base of the conspicuous nuchal tentacles; central pharynx scarcely folded; male reproductive system features an elongate oval seminal vesicle, an ovoid prostatic vesicle, and a cirrus sac armed with small spines and three conspicuous teeth. The female reproductive system features a muscular female atrium with a scalloped tissue of sclerotized appearance, and a elongate vagina oriented towards the anterior region of the body.