E. A.  Smith, ?A list of the Bornean species of the genus Opisthostoma and descriptions of four new species?, The annals and magazine of natural history, including zoology, botany and geology, vol. 6, pp. 269-273, 1894.

E. A.  Smith, ?On the Opisthostoma from Borneo?, Science-gossip., vol. 1, pp. 5-6, 1894.

M.  -Literary-Philosophical-Society, ?Proceedings - Ordinary Meeting, February 20th, 1894.?, Memoirs and proceedings of the Manchester Literary & Philosophical Society, vol. 38, pp. 100-105, 1894.