1. The application of the dorsal light reaction for orientation in water currents by Daphnia magna Straus

   • Robert Hans Stavn

   OriginalPaper Pages: 349 - 362

2. Alarm pheromones in the genus Myrmica (Hymenoptera: Formicidae)

   • R. M. Crewe
   • M. S. Blum

   OriginalPaper Pages: 363 - 373

3. The spectral sensitivity of motion detector units recorded in the optic lobe of the honeybee

   • Lewis G. Bishop

   OriginalPaper Pages: 374 - 381

4. Die Carbohydrasen und Esterasen in Speicheldrüsen und Mitteldarm von Oncopeltus fasciatus Dall. (Heteroptera: Lygaeidae)

   • Jürgen Bongers

   OriginalPaper Pages: 382 - 400

5. Efferente Aktivität in den Statonerven einiger Landpulmonaten (Gastropoda)

   • Heinz G. Wolff

   OriginalPaper Pages: 401 - 409

6. UV-Sehfarbstoff bei Insekten

   • M. Gogala
   • K. Hamdorf
   • J. Schwemer

   OriginalPaper Pages: 410 - 413

7. Postsynaptic potentials from a single monopolar neuron of the ganglion opticum I of the blowfly Calliphora

   • Hansjochem Autrum
   • Friedrich Zettler
   • Matti Järvilehto

   OriginalPaper Pages: 414 - 424

8. Das strauch-spezifische visuelle Perceptor-System der Stabheuschrecke (Carausius morosus)

   • Rudolf Jander
   • Ingrid Volk-Heinrichs

   OriginalPaper Pages: 425 - 447