Published in Proceedings of The Malacological Society of London, in 1919, in volume 13, pages 41-65

Published in Proceedings of the Malacological Society of London, in 1919, in volume 13, pages 68

Published in Proceedings of The Malacological Society of London, in 1919, in volume 13, pages 69-72

Published in Proceedings of The Malacological Society of London, in 1919, in volume 13, pages 75-77

Published in Proceedings of The Malacological Society of London, in 1919, in volume 13, pages 79-84

Published in Proceedings of the Malacological Society of London, in 1919, in volume 13, pages 118-119

Published in Proceedings of the Malacological Society of London, in 1919, in volume 13, pages 152-153