Patella ulyssiponensis Patella ulyssiponensis Patella ulyssiponensis, common name the rough limpet, or China limpet is a species of sea snail, a true limpet, a marine gastropod mollusk in the family Patellidae, one of the families of true limpets. Compared with the common limpet, "Patella vulgata", the rough limpet has a similar shell (maximum size 50mm long x 40 mm wide x 20 mm high, apex closer to the front of the animal/ anterior than to the back/ posterior) but with radiating ridges that are finer and which alternate 1-ridge/ 3-ridges around the shell in a distinct pattern. The interior of the shell
Traditional Chinese medicines derived from the human body "Three Corpses; demonic spirits believed to live in the human body and hasten death" and "gǔdú" 蠱毒 "gu poisoning"; a poison produced by venomous insects; cast a black magic spirit possession over someone". The first "Bencao gangmu" prescription for human nails is not from Chinese medical texts but from Daoist rituals for expelling what (Cooper & Sivin (1973: 220) describe as the "Three Corpse-Worms 三尸, the chief of the "inner gods" who are to the individual microcosm what the celestial bureaucracy is to the cosmos." Prescription 52.6.1, the 斬三尸法 "Method of Beheading the Three Corpses", involves supernaturally cutting the nails