Regardless of the name the explanations are similar. The term “Girdle of Venus” is used in older Palmistry although it is nowhere near the Mount of Venus.
And that provided a basis for its official naming, for "kestos" is Greek for girdle. The mouth is in the middle of the front end. Things change when Venus' Girdle is startled and wants to make a quick getaway. All of the nervousness in such a subject will become nervous energy which will be expended in gratifying animal appetites. Its graceful, transparent body, which is a delicate violet in colour, is 1 metre (about 40 inches) or more long and about 5 cm (2 inches) wide.
Long before acquiring a scientific name, it was known as Venus's Girdle, and properly so, for the goddess of love deserves the most lovely of accouterments. A girdle of Venus on such a hand must be given the full strength of its old traditional interpretation. It has a well-developed Running along a groove on the front are the 2 sticky, branching tentacles that capture tiny, planktonic food and trail back as Venus' Girdle swims. Cestum. Venus’s girdle, (Cestum veneris) ribbon-shaped comb jelly of the order Cestida (phylum Ctenophora) found in the Mediterranean Sea. There is another danger from the Girdle of Venus… The Girdle of Venus does not always run exactly over this path, but sometimes rises on the Mount of Jupiter and runs over onto the Mount of Mercury, sometimes ending on the percussion. Line of Sensitivity and Compassion It is, in part, a sister line to the Heart line, and in some hands, when the Heart line is absent, takes the place of that line.
Florent's Guide To The Eastern Pacific Reefs - Venus Girdle - Cestum veneris - Comb Jellies - - Comb Jellies - Circumtropical - Vernon Mahabal calls this marking “The Line of Neptune” because of the area of the Palm he associates the marking to.