E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
A hypothetical beast which lived in the East. Reynard affirmed that he had sent her majesty the queen a comb made of panthera bone, more lustrous than the rainbow, more odoriferous than any perfume, a charm against every ill, and a universal panacea. (H. von Alkmar: Reynard the Fox.) (1498.)
She wears a comb made of panthera bone. She is all perfection. (See above.)