Published in Proceedings of The Malacological Society of London, in 1918, in volume 13, pages 6-11
Published in Proceedings of The Malacological Society of London, in 1918, in volume 13, pages 17-18
Published in Proceedings of The Malacological Society of London, in 1918, in volume 13, pages 19-20
Published in Proceedings of the Malacological Society of London, in 1918, in volume 13, pages 28-40
Published in Proceedings of the Malacological Society of London, in 1918, in volume 13, pages 16