The monospecific genus Leptotachidia Becker. 1974 (Pseudotachidiidae Lang. 1936) was previously known only from the deep Atlantic. Female specimens of two unknown species of this genus were collected from abyssal sediments during an expedition to the northwestern Pacific on board research vessel ISABU (Korea Institute of Ocean Science and Technology) in November 2017. https://www.chincoponydrillteam.com/product-category/books/