v. 1. Biology, ecology, and systematics -- v. 2. The Lecanidae (Monogononta) -- v. 3. The Notommatidae [and] the Scaridiidae -- v. 4. The Proalidae (Monogononta) -- v. 5. The Dicranophoridae (Monogononta) -- v. 6 Asplanchnidae, Gastropodidae, Lindiidae, Microcodidae, Synchaetidae, Trochosophaeridae and Filinia