Polenecia producta and its web: structure and evolution (Araneae, Uloboridae) Hans M. Peters Original Article Pages: 1 - 9
Ultrastructure of the introvert and associated structures of the larvae of Halicryptus spinulosus (Priapulida) Christian Lemburg Original Article Pages: 11 - 29
The alimentary canal of Bemisia tabaci and Trialeurodes abutilonea (Homoptera, Sternorrhynchi): histology, ultrastructure and correlations to function J. M. CiceroE. HiebertS. E. Webb Original Article Pages: 31 - 39
Modified sperm ultrastructure and some data on spermiogenesis in Provortex tubiferus (Plathelminthes, Rhabdocoela): phylogenetic implications for the Dalyellioida B. Sopott-EhlersU. Ehlers Original Paper Pages: 41 - 49
Gill ultrastructure and symbiotic bacteria in Codakia orbicularis (Bivalvia, Lucinidae) L. FrenkielM. Mouëza Original Article Pages: 51 - 61