Note

Drawings below are first made from photographs that are then compared with the preserved squid under a microscope. A small error will occur in identifying the two classes of photophores (red - counterilluminating photophores with red color filters = "complex photophores, and blue - simple photophores plus lens bearing photophores = "simple photophores." Blue photophores cannot, yet, be reliably separated, in preserved squid, into the two component types.). A damaged or developing/transforming cannot always be reliably identified. Even the presence or absence of photophores can be difficult on strongly curved surfaces, for example, the sides of the head or mantle when viewed ventrally. Therefore, the photophore arrangement, sen below, is most accurate on the ventral surfaces when viewed ventrally and on the lateral surfaces when viewed laterally.

Table. Ventral view of the funnel-groove region of A. morisii. Top tier - Photograph of the preserved squid showing photophores of the funnel groove and surrounding tissue. Middle tier - In the photograph, white dots are placed over the "white" photophores of the funnel groove. Black dots are placed over the two most posteromedial "red" photophores of the ventral head to mark the anterolateral edges of the funnel groove. Bottom tier - Same pattern of dots as in photographs but dots are colored. Colored dots, lines - Aid in comparison of patterns between species. Open dots - Represent photophores that are either of uncertain status as "white" photophores or have variable presence.  Images by R. Young. Comparison of white photophore patterns for all Abraliopsis species can be found here.

Mature male, 22 mm ML	Mature female, 26 mm ML	Mature female, 37 mm ML

Comments: Summary of photophore distributions.(photophore definitions found here)

ARMS:
Medial Arm IV Series - Continuous; reaches about 60% of arm length.
Central Arm IV Sector - Few blue photophores present near arm base.
Lateral Arm IV Series - Slightly discontinuous; reaches arm tip.
Lateral Membrane Series of arms IV - Reaches about half of arm length.
Arm III Series - Discontinuous; virtually reaches full arm length (i.e., ~ 90% of arm length).

HEAD - Typical three photophore series on central-ventral head with:
Median Head Series - 5 (rarely 7) red photophores in posterior caret. Anteriorly this series, in the drawings above, is very distorted due to the condition of the specimen.
Median Head Sector - Absent.
Lateral Head Sector - Many blue photophores scattered thoughout the sector.
Window Sector - Few blue photophores, scattered in anterior region of the sector. Otherwise, photophores absent.
1st Lateral Window Series - Two segments broadly separated by mostly a single series of blue photophores: Both segments with 2 red photophores.
2nd Lateral Window Series  - Absent
Eyelid Series - Encircles eye opening with red photophores only on ventral half. Posterior Eyelid Series with two large blue photophores displaced slightly posteriorly from eyelid series; more ventral of two, larger and more posterior. Formula: RbBbB or RbbBbB.
Occipital Series - Rb at <~20 mm ML; otherwise: Rbb.
Lateral Funnel-groove Series - 4 red photophores, in two segments but unusually well aligned.
White Patch (funnel groove) - Complex-1 pattern (red, green, blue).

FUNNEL:
Medial Patch - "Nose" pattern of 4 "red" photophores. 
Lateral Patch - Two red photophores.

MANTLE - Marginal six photophore series on ventral mantle with:
Median Mantle Sector - Narrow but bare in midline over entire mantle.
Medial Mantle Series - Very irregular single series.
Lateral Mantle Sectors - In anterior half of mantle, blue photophores scattered throughout but more numerous in 1st Sector.
Lateral and Mantle-angle Series - Both with somewhat irregular alignments.