=Acadēmia=, a place near Athens surrounded with high trees, and adorned with spacious covered walks, belonging to Academus, from whom the name is derived. Some derive the word from ἑκας δημος, _removed from the people_. Here Plato opened his school of philosophy, and from this, every place sacred to learning has ever since been called _Academia_. To exclude from it profaneness and dissipation, it was even forbidden to laugh there. It was called _Academia vetus_, to distinguish it from the _second Academy_, founded by Arcesilaus, who made some few alterations in the Platonic philosophy, and from the _third_ which was established by Carneades. _Cicero_, _de Divinatione_, bk. 1, ch. 3.――_Diogenes Laërtius_, bk. 3.――_Ælian_, _Varia Historia_, bk. 3, ch. 35. =Acadēmus=, an Athenian, who discovered to Castor and Pollux where Theseus had concealed their sister Helen, for which they amply rewarded him. _Plutarch_, _Theseus_. =Acalandrus=, or =Acalyndrus=, a river falling into the bay of Tarentum. _Pliny_, bk. 3, ch. 11. =Acalle=, a daughter of Minos and Pasiphae. _Apollodorus_, bk. 3, ch. 1. =Acamarchis=, one of the Oceanides. =Acămas=, son of Theseus and Phædra, went with Diomedes to demand Helen from the Trojans after her elopement from Menelaus. In his embassy he had a son called Munitus, by Laodice the daughter of Priam. He was concerned in the Trojan war, and afterwards built the town of Acamantium in Phrygia, and on his return to Greece called a tribe after his own name at Athens. _Pausanias_, bk. 10, ch. 26.――_Quintus Smyrnæus_, bk. 12.――_Hyginus_, fable 108.――――A son of Antenor in the Trojan war. _Homer_, _Iliad_, bk. 11, li. 60, &c.――――A Thracian auxiliary of Priam in the Trojan war. _Homer_, _Iliad_, bk. 11. =Acampsis=, a river of Colchis. _Arrian._ =Acantha=, a nymph loved by Apollo, and changed into the flower Acanthus. =Acanthus=, a town near mount Athos, belonging to Macedonia, or, according to others, to Thrace. It was founded by a colony from Andros. _Thucydides_, bk. 4, ch. 84.――_Mela_, bk. 2, ch. 2.―――― Another in Egypt near the Nile, called also Dulopolis. _Pliny_, bk. 5, ch. 28.――――An island mentioned by _Pliny_, bk. 5, ch. 32. =Acăra=, a town of Pannonia.――――Another in Italy. =Acaria=, a fountain of Corinth, where Iolas cut off the head of Eurystheus. _Strabo_, bk. 8. =Acarnania=, anciently Curetis, a country of Epirus, at the north of the Ionian sea, divided from Ætolia by the Achelous. The inhabitants reckoned only six months in the year; they were luxurious, and addicted to pleasure, so that _porcus Acarnas_ became proverbial. Their horses were famous. It received its name from Acarnas. _Pliny_, bk. 2, ch. 90.――_Mela_, bk. 2, ch. 3.――_Strabo_, bks. 7 & 9.――_Pausanias_, bk. 8, ch. 24.――_Lucian_, _Dialogi Meretricii_.