1. Ultrastructure of coelomic lining in echinoderm podia: significance for concepts in the evolution of muscle and peritoneal cells

   • Reinhard M. Rieger
   • Julian Lombardi

   OriginalPaper Pages: 191 - 208

2. Experimental and comparative morphology of radula renewal in pulmonates (Mollusca, Gastropoda)

   • Ute Mackenstedt
   • Konrad Märkel

   OriginalPaper Pages: 209 - 239

3. Cytology of the midgut epithelium of Aeshna larvae (Insecta, Odonata)

   • H. Komnick
   • J. Kukulies

   OriginalPaper Pages: 241 - 253