Cephallenia is situated opposite to Acarnania, at the distance from Leucatas of about 50, or according to others, of 40 stadia, and from Chelonatas654 of about 80 stadia. It is about 300 stadia (1300?) in circumference. It extends in length towards the south-east (Eurus). It is mountainous; the largest mountain in it is the Ænus,655 on which is the temple of Jupiter Ænesius. Here is the narrowest part of the island, which forms a low isthmus, that is frequently overflowed from sea to sea.656 Cranii657 and Paleis658 are situated near the straits in the Gulf.