Note 2574 — BOOK IX. THE NATURAL HISTORY OF FISHES.

Ælian, Hist. Anim. B. vii. c. 24, calls this kind of crab δρομίας, the “runner,” from the great distance it is known to travel. He says, that they meet together, coming in one by one, at a certain bay in the Thracian Bosporus, where those who have arrived wait for the others; and that on finding that the waves of the Euxine are sufficiently violent to sweep them away, they unite in a dense body, and then waiting till the waters have retired, make a passage across the straits.