Longiprostatum ricketts Hyman 1953

Longiprostatum ricketts Hyman, 1953 Longiprostatum ricketts Hyman, 1953a: 300–301, figs 37–38 (type locality: Los Ángeles Bay, Baja California). Longiprostatum ricketts – Brusca 2005: 69 (checklist). Distribution Bahía de los Ángeles, Baja California. Habitat Benthic. Remarks Longiprostatum rickettsi is a species characterized by tentacular, cerebral, frontal, and marginal groups of eyes distributed only in the anterior region of the body, a very long and narrow prostatic vesicle, with a sclerotized diaphragm separating its lumen from that of the penis papilla and with a sclerotic lining and seminal vesicle and Lang’s vesicle, both of which are present but reduced.