Ching 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 1965: 53-63