Photographs below-right are of a preserved squid and show the basic photophore groups, from different views, with superimposed lines and dots to emphasize the photophore groups. Photographs below-left are the same pictures without superimposed lines and dots so that the photophores can be seen without obstruction. The superimposed lines are formed by first placing white dots over the pigmented, photogenic cups of all photophore in a particular group. The dots are then joined by a line of the appropriate color.
The color coding of the lines is as follows:- Midline Series
- Ventral Matrix
- Basal Arm IV Row
- Right Eyelid Series
- Left Eyelid Series
- Right basal series
- Left basal series
- Basal row
- Right basal series
- Left basal series
- Right Accessory Series
- Left Accessory Series
Figure. Paired photographs of the head of H. sp. A, 25 mm ML, Hawaiian waters.
Top - Lateral views of the right side of the head. Upper middle - Ventral views of the head. Lower middle - Lateral views of the left side of the head. Bottom - Dorsal views of the head. Photographs by R. Young.
