A very curious mode of fishing for Turtle is pursued by means of small fish, a species of Echeneis or Remora. These small fish are provided with an oval plate on the head, which consists of a score of parallel plates, forming two series, furnished on their outer edge with an oval disk, soft and fleshy at its circumference; in the middle of this plate is a complicated apparatus of bony pieces dispersed across the surface, which can be moved on their axis by particular muscles, their free edges being furnished with small hooks, which are all raised at once like the points of a wool-card. The fishermen keep many of these fishes in buckets of water. When they see a sleeping Turtle they approach it, and throw one of these suck-fish into the sea. The fish dives under the Turtle, and fixes itself inextricably to it by means of their cephalic disk. As the fish is attached to a long cord by means of a ring in its tail, the fish is drawn on board along with its victim. This is line fishing of a new kind, in which the hook is living, and pursues its prey in the bosom of the deep. The Green Turtle, whose flesh is celebrated for its delicacy and excellence of its fat, is that from which Turtle soup is made. Turtle soup is only of recent invention, the first Turtle having been brought to London by Admiral Anson in 1752. It was long a costly dish, and even now, although the introduction of steam and other adjuncts to navigation has greatly modified the expense, its price is about ten shillings per pound weight. [Illustration: Fig. 43.--Loggerhead Turtle (_Chelonia caouana_).] Much of the tortoise-shell of commerce comes from the Green Turtle, but by far the finest specimens are produced by the Imbricated or Hawk's-bill Turtle, _Chelonia caretta_ (Fig. 42). In this species the plates of the disk are imbricated, or lapping over each other, and thirteen in number. The muzzle is long and compressed; the jaws with straight edges, without dentation, curving slightly towards each other at their extremities, with two nails on each fin. It rarely attains the size or weight of the Green Turtle. The Hawk's-bill Turtle is met with in the Indian Ocean, and also on the American shores. It feeds on marine plants, on mollusks, and small fishes, and is chiefly sought after for its shell, which produces the finest tortoise-shell known; while its flesh is rendered unpalatable from its musky flavour. On the other hand, its eggs are excellent when fresh, and eagerly sought after.