T.  Pain, ?Pomacea (Ampullariidae) of British Guiana?, Proceedings of the Malacological Society of London, vol. 28, pp. 63-74 pls. 6-8, 1950.

T.  Pain, ?On the types of three species of Pomacea described by G.B. Sowerby III?, Proceedings of the Malacological Society of London, vol. 28, pp. 39-40, pls. 1, 2, 1949.

T.  Pain, ?Three new species of Pomacea from South America?, Proceedings of the Malacological Society of London, vol. 27, pp. 257-258, 1949.

T.  Pain, ?On Pila canaliculata and its locality?, Proceedings of the Malacological Society of London, vol. 27, pp. 58-59, 1946.

T.  Pain, ?Two new species of Pila (= Ampullaria) from South America?, Proceedings of the Malacological Society of London, pp. 180-181, pl. 6, 1946.

T.  Pain, ?Pomacea ghiesbreghti (Reeve) in Guatemala?, Proceedings of the Malacological Society of London, vol. 29, pp. 222-223, 1953.