Dactyli (Gr.) From daktulos, “a finger”. The name given to the Phrygian Hierophants of Kybele, who were regarded as the greatest magicians and exorcists. They were five or ten in number because of the five fingers on one hand that blessed, and the ten on both hands which evoke the gods. They also healed by manipulation or mesmerism.
Source: H.P.Blavatsky - The Theosophical Glossary