1. Ultrastructure of potential photoreceptor organs in the larva ofScrupocellaria bertholetti (bryozoa)

   • Roy L. Hughes Jr.
   • Robert M. Woollacott

   OriginalPaper Pages: 225 - 234

2. A new function of rhabdites: Mucus production for ciliary gliding

   • Gary G. Martin

   OriginalPaper Pages: 235 - 248

3. Ciliary gliding in lower invertebrates

   • Gary G. Martin

   OriginalPaper Pages: 249 - 261

4. Morphology and function of cuticular micro-scales and corresponding structures in terrestrial isopods (Crust., Isop., Oniscoidea)

   • Helmut Schmalfuss

   OriginalPaper Pages: 263 - 274

5. Neurosecretion in selected nemertina

   • Joan D. Ferraris

   OriginalPaper Pages: 275 - 287

6. Functional morphology of the autotomy plane of the brittlestarOphiocomina nigra (abildgaard) (ophiuroidea, echinodermata)

   • I. C. Wilkie

   OriginalPaper Pages: 289 - 305