Ching, H. L. (1965). Life cycles of Lacunovermis conspicuus n. gen., n. sp. and Meiogymnophallus multigemmulus n. gen., n. sp. (Gymnophallidae: Trematoda) from Macoma inconspicua and diving ducks from Vancouver, Canada.
Proceedings of the Helminthological Society of Washington. 32: 53–63.