AQUATIC ANIMALS. says that behind Pyrene, as far as the river Narbo, the whole country is a plain, through which the rivers Illiberis and Rhoscynus proceed, flowing through cities of the same name as themselves, which are inhabited by some of the Celtæ; and in this plain he says that the above-mentioned fossil fish are also found. And he says that the soil of that plain is light, and that a great quantity of the herb agrostis grows in it; and that beneath it, as the soil is sandy for a depth of two or three cubits, the water flows, which wanders away from these rivers; and so the fish, too, leaving the rivers, and proceeding underground, in the course of these erratic underflowings, in quest of food (for they are exceedingly fond of the root of the agrostis), have caused the whole plain to be full of subterranean fish, which people catch when they dig up the plain. "And among the Indians," says Theophrastus, "there are fish which go forth out of the rivers over the land, and then, leaping back, return again to the water, just like frogs; being in appearance very like the fish which are called maxini."
5. But I am not ignorant of what Clearchus, the Peripatetic philosopher, has said about what he calls the exocœtus fish, or fish which comes out of the water to sleep, which he mentions in his work entitled A Treatise on Aquatic Animals. For he has said, (and I think that I recollect his exact words, which are as follows,) "The exocœtus fish, which some people call Adonis, has derived its name from constantly taking his rest out of the water. He is rather of a red colour, and from his gills down to his tail he has on each side of his body one white stripe reaching the whole length of his body. And he is round, but not being broad, he is equal in size to the cestrinisci which are found near the shore; and they are as near as may be about eight fingers in length. Altogether he is very like the fish called the sea-goat, except that the latter has a black place under his stomach, which they call the beard of the goat. And the exocœtus is one of the fish which keeps near to the rocks, and spends his life in rocky places. When it is calm weather he springs up with the waves and lies on the rocks for a considerable time, sleeping on the dry land, and turning himself so as to bask in the sun: and then, when he has had sufficient rest, he rolls towards the water again, until the wave, taking him
