Materials and methods. The fifth line from the bottom of the second paragraph reads ‘digestion in collagenase (…) at 100 units ml−1 …’.

The concentration of collagenase should be 1000 units ml−1

Primary culture of identified neurones from a cnidarian

By JAN PRZYSIEZNIAK AND ANDREW N. SPENCER

J. exp. Biol. 142, 97–113.

Materials and methods. The fifth line from the bottom of the second paragraph reads ‘digestion in collagenase (…) at 100unitsml−1 …’.

The concentration of collagenase should be 1000 units ml−1.

Kinematic analysis of symmetrical flight manoeuvres of Odonata

By G. RÜPPELL

J. exp. Biol. 144, 13–42.

Due to a printer’s error, Fig. 10 on p. 33 was reversed. A loose-leaf insertion of the corrected page can be found in this volume.