Euplanina horrida Sopott-Ehlers & Schmidt 1975

Euplanina horrida Sopott-Ehlers & Schmidt, 1975 Euplanina horrida Sopott-Ehlers & Schmidt, 1975: 204–207, pl. 7 fig. a–c (type locality: Santa Cruz Island, Galapagos Archipelago, Ecuador). Euplanina horrida – Faubel 1983: 33–36, fig. 3e (identification keys). — Westheide 1991: 44 (mentioned only). Distribution Santa Cruz Island, Galapagos Archipelago, Ecuador. Habitat Interstitial (coarse intertidal sediments) or rocks. Remarks Faubel (1983) considered E. horrida a very primitive species due to its of any penis papilla and seminal vesicle, its very simplified male tract, and a female system with Lang’s vesicle connected with the exterior by a Lang’s duct (ductus vaginalis). Between the two female apertures, an accessory female organ opens to the exterior independently.