1. Effects of light on ocelli of seastars

   • Richard M. Eakin
   • Jean L. Brandenburger

   OriginalPaper Pages: 191 - 200

2. Ultrastructure of alimentary epithelia of lobsters,Homarus americanus andH. gammarus, and crab,Cancer magister

   • Donald L. Mykles

   OriginalPaper Pages: 201 - 215

3. Ultrastructure du canal des glandes agrégées et flagelliformes d'Araneus diadematus Clerck (Araneae, Araneidae)

   • J. Kovoor
   • L. Zylberberg

   OriginalPaper Pages: 217 - 239

4. The fine structure of Gnathostomulid reproductive organs

   • Marlene Mainitz

   OriginalPaper Pages: 241 - 272

5. An ultrastructural study of the tips of four classical bimodal sensilla with one mechanosensitive and several chemosensitive receptor cells

   • Karl Peter Gaffal

   OriginalPaper Pages: 273 - 291