Some Observations on "Arm Hollows"

[Sam G]

Here's a nymph with both a beige stripe and dots in the arm hollow, from f71v:



In this case the stripe is contained entirely within the arm hollow and does not connect to the back of the nymph's head, so there's basically no chance that it's an attempt to depict hair or anything of the sort.

Looking at all the examples from the Zodiac section considered so far, what's interesting is that the arm hollow may be:

1) Empty
2) Filled with dots
3) Filled with a beige stripe
4) Filled with both a beige stripe and dots

This is not too different from the way the stars the nymphs are holding are filled in.  So there seems to be some kind of connection or similarity between the arm hollows and the stars.