New psychropotid species (Echinodermata, Holothuroidea, Elasipodida) of the Western Pacific with phylogenetic analyses Author Yu, Chuan School of Oceanography, Shanghai Jiao Tong University, Shanghai, China & Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China Author Zhang, Dongsheng School of Oceanography, Shanghai Jiao Tong University, Shanghai, China & Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, Guangdong, China Author Zhang, Ruiyan School of Oceanography, Shanghai Jiao Tong University, Shanghai, China Author Wang, Chunsheng School of Oceanography, Shanghai Jiao Tong University, Shanghai, China & Key Laboratory of Marine Ecosystem Dynamics, Second Institute of Oceanography, Ministry of Natural Resources, Hangzhou, China & Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, Guangdong, China & State Key Laboratory of Satellite Ocean Environment Dynamics, Ministry of Natural Resources, Hangzhou, China wangsio@sio.org.cn text ZooKeys 2022 2022-03-09 1088 99 114 http://dx.doi.org/10.3897/zookeys.1088.69141 journal article http://dx.doi.org/10.3897/zookeys.1088.69141 1313-2970-1088-99 51CD3C78D6F8484588DB14297A1B2218 1CD7CED3CC645A4E96405A90761713F1 Genus Benthodytes Theel , 1882 Diagnosis (according to Hansen 1975 ). Anus dorsal. Unpaired dorsal appendages absent. Circum-oral (or post-oral) papillae present. Tentacles soft, pliable, and retractile.