| O CANTO DAS CONCHAS / Cyclophorus layardi Ilustração científica do séc. XIX - Litografia de G.B. Sowerby triplov.com 10-06-2003 |
| ADAMS, Henry (1868) - Descriptions of some new species of Shells, chiefly from Ceylon. Proceedings of the Zoological Society of London, II: 292-294. Plate XXXIV. |