First revision of the apodid holothurian genus Patinapta Heding, 1928 (Synaptidae) in Japanese waters, with establishment of four new species from Kyushu Island and Ryukyu Islands, southwestern Japan Author Yamana, Yusuke Wakayama Prefectural Museum of Natural History (WMNH), Invertebrate Specimen House, Funo 370 - 1, Kainan, Wakayama 642 - 0001, Japan Author Hirashima, Kentarou Wakayama Prefectural Museum of Natural History (WMNH), 1 Room Curators Head Office, Funo 370 - 1, Kainan, Wakayama 642 - 0001, Japan Author Sato, Masanori Graduate School of Science and Engineering, Kagoshima University, Kagoshima 890 - 0065, Japan & Present address: 5233 Hiramatsu, Aira, Kagoshima 899 - 5652, Japan Author Yamamori, Luna Seto Marine biological laboratory (SMBL) of Kyoto University, 459, Shirahama, Wakayama 649 - 2211, Japan text Zootaxa 2025 2025-01-13 5569 1 1 54 https://doi.org/10.11646/zootaxa.5569.1.1 journal article 10.11646/zootaxa.5569.1.1 1175-5326 96194340-054D-49C0-BD89-D47899BCAF14 Patinapta Heding, 1928 Diagnosis of genus [summarized from Heding (1928) : 237–238 and that of Cherbonnier (1954) ]. Type species: Synapta ooplax von Marenzeller. With diagnosis: Tentacles pinnate, 12, sensory cups on the oral side of the tentacles, not forming pigmented eye-spots. Radial pieces of calcareous ring perforated for nerves. Polian vesicles few, ranging from 1 to 8, stone canal is single. Ossicles in the body, anchors, anchor plates and granules, also rods in tentacles. Anchors of anterior body shorter and narrower than those of posterior body. However, anchor plates of anterior body larger than those of posterior body. Perforations on the anchor plates vary in number, large perforations somewhat dented, lacking a bridge-like frame (seen in many other genera of family Synaptidae ) on basal part of the plate. dorsal mesentary. Ciliated funnels erupt on the mesenteries