(Εὐκααμπίδας), less properly EUCA'LPIDAS (Εὐκαλπίδας), an Arcadian of Maenalus, is mentioned by Demosthenes as one of those who, for the sake of private gain, became the instruments of Philip of Macedon in sapping the independence of their country. Polybius censures Demosthenes for his injustice in bringing so sweeping a charge against a number of distinguished men, and defends the Arcadians and Messenians in particular for their connexion with Philip At the worst, he says, they are chargeable only with an error of judgment, in not seeing what was best for their country; and he thinks that, even in this point, they were justified by the result, --as if the result might not have been different, had they taken a different course. (Dem. de Cor. pp. 245, 324; Plb. 17.14.) [CINEAS.] Eucampidas is mentioned by Pausanias (8.27) as one of those who led the Maenalian settlers to Megalopolis, to form part of the population of the new city, B. C. 371.