Alalcomenia was, in Greek mythology

Greek mythology

Greek mythology is the body of myths and legends belonging to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices. They were a part of religion in ancient Greece...

, one of the daughters of Ogyges

Ogyges

Ogyges, Ogygus or Ogygos is a primeval mythological ruler in ancient Greece, generally of Boeotia, but an alternative tradition makes him the first king of Attica.-Etymology:...

. She and her two sisters, Thelxionoea and Aulis

Aulis

Aulis may refer to:* Aulis, , an ancient Greek town in Boeotia, and traditionally the port from which the Greek army set sail for the Trojan War.* Aulis, a daughter of King Ogyges and Thebe*Aulis, a genus of ladybird beetle...

, were regarded as supernatural beings who watched over oath

Oath

An oath is either a statement of fact or a promise calling upon something or someone that the oath maker considers sacred, usually God, as a witness to the binding nature of the promise or the truth of the statement of fact. To swear is to take an oath, to make a solemn vow...

s and saw that they were not taken rashly or thoughtlessly. Their name was the Praxidikai , and they had a temple in common at the foot of the Telphusian mount in Boeotia

Boeotia

Boeotia, also spelled Beotia and Bœotia , is one of the regional units of Greece. It is part of the region of Central Greece. It was also a region of ancient Greece. Its capital is Livadeia, the second largest city being Thebes.-Geography:...

.

These three were sometimes rendered as a single goddess, Praxidike

Praxidike

In Greek mythology, Praxidike is the goddess of judicial punishment and the exactor of vengeance, which were two closely allied concepts in the classical Greek world-view....

, "she who exacts punishment". The representations of these divinities consisted of bodiless heads. Like other Greek deities, animals were sacrificed to them, but only the heads.