Parviplana hymani Faubel 1983

Parviplana hymani Faubel, 1983 Parviplana hymani Hyman, 1953a: 312–315, figs 60–61 (type locality: Tomales Haed, Marin Country, California, United States). Parviplana hymani Faubel, 1983: 86–87 (new name). Parviplana hymani – Brusca 2005: 69 (new record from Gulf of California, Mexico, checklist). Distribution Newport Bay and Tomales Haed, Marin Country, California; Gulf of California, Mexico. Habitat Benthic (on a rocky shore, among a mass of sponge and bryozoans). Remarks Parviplana hymani lacks nuchal tentacles, has an ejaculatory duct through the prostatic vesicle, and has a bulbous vagina. In the WoRMS database, Parviplana californica is listed as a junior synonym of Parviplana hymani and Leptoplanella californica (= Stylochoplana californica). However, this classification is not correct. Hyman (1953a) described a new genus, Parviplana, and moved Leptoplanella californica (= Stylochoplana californica) into this genus, creating the combination Parviplana californica. In the same publication, a new specimen was also described under that name. However, Faubel (1983) proposed a new specific epithet, Parviplana hymani, which invalidated the synonyms Parviplana californica and Stylochoplana californica for this species.