Dim rhif - Dyma chwilen gorniog (Ceroplesis, teulu Cerambycidae, is-deulu Lamiinae) John Williams-Vaughan, a oedd yn blentyn ddechrau’r 1900au. Daw o Lagos, Nigeria. Yn ystod ei fywyd, cyfrannodd John Williams-Vaughan sbesimenau lu i’r amgueddfa. Dyma ddywed y llythyr: ‘My dear mama old beetle look’d dull this morning but I hope he will be more cheerful tomorrow. Will you please dear Mama to come with me to see him. I remain your dutiful son. J W V’