Studies in helminthology MacCallum, G. A. Zoopathologica 1921 1 6 137 284 urn:lsid:zoobank.org:act:3965C48BA1614C07A169A5C9EDD5CF34 Trematoda Heronimidae Heronimus CoL Animalia Plagiorchiida Platyhelminthes species maternum  This treatment is a stub. You can help Plazi making the full treatment available.