Hone-onna

 is a yōkai depicted in the "Konjaku Gazu Zoku Hyakki" (1779) by Toriyama Sekien. As its name implies, it depicts this yōkai as a woman in the form of bones.
In Sekien's explanatory text in the "Konjaku Gazu Zoku Hyakki" states that there is a story called in which an aged female skeleton would carry a chōchin (lantern) decorated with botan flowers on it and visit the house of a man she loved back when she was still alive, and then cavort with that man. In other words, this refers to , within the collection of writings called by Asai Ryōi. (The collection was composed as a sort of moral-free version of the Chinese work "Jiandeng Xinhua" written in 1378 by Qu You.) In the "Botan Dōrō", a man named Ogiwara Shinnojō meets a beautiful woman named Yako and they become entangled almost every night, but one night an old person from next door catches a glimpse of it and sees the strange scene of Shinnojō embracing with a skeleton.
According to "Tōhoku Kaidan no Tabi" by Norio Yamada, there is an odd tale in the Aomori Prefecture about a yōkai under the title of "hone-onna". It says that in the Ansei period, a woman who was said to be ugly by those around her became a good-looking skeleton after death, and walked around town as a skeleton to let everyone see. It is said that she likes fish bones and would collapse upon encountering a high priest.