Ptychodactiidae with short column. Tentacles fairly numerous up to about 120. No sphincter. Actinopharynx short, prolonged into lappets on the larger mesenteries. No distinct siphonoglyphs. Mesenteries irregularly arranged. The mesenteries of the first cycle and usually those of the second perfect. Parietobasilar muscles absent. Proximal part of mesenteries only slightly coalesced.
P. patula Appellöf 1893