Shen Collection, Middle Volume. Radical: Insect (chóng). Kangxi Stroke Count: 15. Page 1090, Entry 01.
Tang Rhymes (Tang yun) and Collected Rhymes (Jiyun) define this as pronounced mei (falling tone).
Expanded Rhymes (Guangyun) states: The mao is similar to a shrimp; it parasitizes the shells of turtles, and consuming it can enhance one's complexion.
Guo Pu, Rhapsody on the River (Jiang fu): Mentions the nao, horseshoe crab, and mao. Annotation: The mao, when consumed, can make a person’s appearance seem alluring and captivating.
Book of Tang (Tang shu), Biography of the Deposed Empress Wang: Consort Wu falsely accused Empress Wang and her mother of using mao sorcery to bewitch the Emperor. The Emperor believed these claims and issued an edict to depose the Empress.