Lymphatic vessels in lungfishes (Dipnoi) W. O. P. VogelUlrich Mattheus ORIGINAL ARTICLE Pages: 199 - 212
Development and submicroscopic anatomy of male gametes in Halammovortex nigrifrons (Plathelminthes, Rhabdocoela, ”Dalyellioida”): phylogenetic implications and functional aspects Beate Sopott-Ehlers ORIGINAL ARTICLE Pages: 213 - 222
Intracellular pathways and degradation of endosomal contents in basal epithelial cells of freshwater sponges (Porifera, Spongillidae) Beate Hahn-KeserW. Stockem ORIGINAL ARTICLE Pages: 223 - 236
Morphology and histology of the digestive tract of Nautilus pompilius and Nautilus macromphalus (Cephalopoda, Tetrabranchiata) B. WestermannR. Schipp ORIGINAL ARTICLE Pages: 237 - 245
Ultrastructural study of two glandular systems in the proboscidial glandular epithelium of Riseriellus occultus (Nemertea, Heteronemertea) S. MontalvoC. RoldánP. García-Corrales ORIGINAL ARTICLE Pages: 247 - 257
Precursor structures and evolution of tympanal organs in Lepidoptera (Insecta, Pterygota) Ivar Hasenfuss ERRATUM Pages: 259 - 259