The compound eye of Parnara guttata (Insecta, Lepidoptera, Hesperiidae): Fine structure of the ommatidium Miki ShimohigashiYoshiya Tominaga OriginalPaper Pages: 131 - 136
Development of the supporting cells and structures derived from them in the inner ear of the grass frog, Rana temporaria (Amphibia, Anura) Iris HertwigHans Schneider OriginalPaper Pages: 137 - 146
Feinstruktur der Protonephridien von Paromalostomum proceracauda (Plathelminthes, Macrostomida) Jochen Brüggemann OriginalPaper Pages: 147 - 154
The spermatogenesis of Ephydatia fluviatilis (Porifera) Wolfgang PaulusNorbert Weissenfels OriginalPaper Pages: 155 - 162
Ultrastructure of the copulatory organ of Haplopharynx quadristimulus and its phylogenetic significance (Plathelminthes, Haplopharyngida) David A. Doe OriginalPaper Pages: 163 - 173
Evolutionary aspects on the construction of the first optic neuropil (lamina) in Crustacea Rolf ElofssonMariana Hagberg OriginalPaper Pages: 174 - 178
Ultrastructure of the retinal pigmented epithelium of light- and dark-adapted young, pigmented, and mature silver eels, Anguilla anguilla (Pisces, Teleostei) A. Es-SounniM. A. Ali OriginalPaper Pages: 179 - 184
Olfaction in peking ducks (Anas platyrhynchos): A comparative study of centrifugal and centripetal olfactory connections in young ducks and in embryos and ducklings (Aves) G. TeuchertT. ReissmannA. Vockel OriginalPaper Pages: 185 - 198