The responses of chromatophores to Eght stimuli have been reported in various kinds of animals. In almost all cases, the stimuli have been regarded as not affecting the chromatophore directly, but through nervous or hormonal mediation. Little is understood about chromatophore behaviour as a primary response to light.

*

The other form has ‘rod-shaped ‘blue spots and ‘red ‘patterns at the corresponding places; the chromatophore distributions in the first group used in the experiment are sparser and the reactions to the light clearer than the second form.

Author’s thanks are due to Mr T. Nakatsubo of the Olympus Optical Company, without whose co-operation this apparatus could not have been prepared.

You do not currently have access to this content.