I have to assume this is some kind of satire on blanket assertions within astrology, otherwise I have no idea how you justify or even begin to consider assigning a 12th of all births as having some inherent necrophiliac tendency?
And repeat that for the other truly horrible ones.
It might be referring to the relatively archaic ethnographic/anthropological term?
Like the Pisces is supposed to center objects of significance/power in their sexuality, or something?