Ultrastructure and formation of the body cavity lining in Phoronis muelleri (Phoronida, Lophophorata) T. Bartolomaeus Original Article Pages: 135 - 148
The spermathecal epithelium, sperm and their interactions in the hermaphroditic land snail Arianta arbustorum (Pulmonata, Stylommatophora) Nenad C. BojatUrsula SauderM. Haase Original Article Pages: 149 - 157
Pigmentation and tunic cells in Cystodytes dellechiajei (Urochordata, Ascidiacea) Eva-Maria RottmayrBert SteffanG. Wanner Original Article Pages: 159 - 170
Hydropy and ultrastructure of egg envelopes in Aleochara bilineata (Coleoptera, Staphylinidae) Marie-Josée GauvinG. BoivinJean-Pierre Nénon Original Article Pages: 171 - 175
Sperm dimorphism and spermatozeugmata in the commensal bivalve Pseudopythina macrophthalmensis (Galeommatoidea, Kelliidae) Å. JespersenTakeharu KosugeJørgen Lützen Original Article Pages: 177 - 189