The ushi-oni, or gyūki, is a yōkai from the folklore of western Japan. The folklore describes more than one kind of ushi-oni, but the depiction of a bovine-headed monster occurs in most. Ushi-oni gene
Ushi-oni, from Bakemono no e scroll, Brigham Young University
"Ushi-oni" (うし鬼) from the Hyakkai Zukan by Sawaki Suushi
"Ushi-oni" (牛鬼) from the Gazu Hyakki Yagyō by Sekien Toriyama
Nadeushi at the Ushijima Jinja in Sumida, Tokyo
Nure-onna is a Japanese yōkai which resembles a reptilian creature with the head of a woman and the body of a snake. They are also seen as a paranormal phenomenon at sea under the name of nureyomejo.
Ushi-oni
…god who fell and became seen as a yōkai. On the coast from the San'in region to northern Kyushu, they are said to appear from the sea together with the nure-onna and iso-onna. It is said that a woman carrying a baby would stop someone and ask them to hold the baby; when this person holds the baby, the baby would…
"Nure-onna" (ぬれ女) from the Hyakkai-Zukan by Sawaki Suushi.
"Nure-onna" (濡女) from the Gazu Hyakki Yagyō by Toriyama Sekien