40005318, Marlborough, 535, A nondescript animal (marmoset ?), with bearded face and long bushy tail. Ground line., Unknown, Boardman, J., Scarisbrick, D., Wagner C., Zwierlein-Diehl, E: The Marlborough Gems (2009), Story-Maskelyne, M.H.: The Marlborough Gems (1870), no. 535, Cameo, Onyx