The sphaeridia of sea urchins: ultrastructure and supposed function (Echinodermata, Echinoida) Konrad MärkelUte MackenstedtUrsula Röser OriginalPaper Pages: 1 - 10
Photoreceptors with mitochondrial lenses inPogaina suecica (Plathelminthes, Rhabdocoela) Beate Sopott-Ehlers OriginalPaper Pages: 11 - 15
A new glandular sensory organ inCatanema sp. (Nematoda, Stilbonematinae) Monika NebelsickMichael BlumerJörg Ott OriginalPaper Pages: 17 - 26
On the spinning apparatus and the structure of the capture threads ofDeinopis subrufus (Araneae, Deinopidae) Hans M. Peters OriginalPaper Pages: 27 - 37
Morphology and ultrastructure of the gills of terrestrial crabs (Crustacea, Gecarcinidae and Grapsidae): Adaptations for air-breathing Caroline A. FarrellyPeter Greenaway OriginalPaper Pages: 39 - 49
The filtration apparatus for food collection in freshwater sponges (Porifera, Spongillidae) Norbert Weissenfels OriginalPaper Pages: 51 - 55
Spermatogenesis in the earthwormMicrochaetus pentheri (Oligochaeta, Microchaetidae) A. N. HodgsonB. G. M. Jamieson OriginalPaper Pages: 57 - 66
