Note 2252 — BOOK IX. THE NATURAL HISTORY OF FISHES.

Cuvier remarks, that in the present Chapter there is a confusion of the peculiarities of two different animals, and refers the reader to his Note on B. viii. c. 38, which, so far as it has not been set forth, is to the following effect:—“I may here remark, that Pliny speaks on several occasions of dolphins with spines or stings on the back, although at other times he is found to give that name to the same cetaceous animal which is so denominated by us. Thus, in his story in B. ix. c. 8, of the friendship conceived by a dolphin in Lake Lucrinus for a child at Baiæ, he takes care to remark that the dolphin, when taking the child on his back, concealed his spines beneath his dorsal fin. I am of opinion, however, that I have recognized the fish which Seneca, Pliny, and even Aristotle have sometimes confounded with the real dolphin, apparently because it had received that name from certain fishermen, and these are my reasons for forming this conclusion. In c. 7 of the Ninth Book, Pliny mingles with many facts that really do belong to the real dolphin, one trait which is quite foreign to it. ‘It is so swift,’ says he, ‘that were it not for the fact that its mouth is situate much beneath its muzzle, almost, indeed, in the middle of its belly, not a fish would be able to escape its pursuit: in consequence of this, it can only seize its prey by turning on its back.’ This, it must be observed, is not one of those mistakes which we are to put down to Pliny’s own account, and of which he has so many; for we find Aristotle as well, who has so perfectly known and described the ordinary dolphin, attributing a mouth similarly situate to the dolphin and the cartilaginous animals. This fact, which is totally false as regards the real dolphin, is, in all probability, applicable to the alleged dolphin, whose back is mentioned as being armed with spines. These three characteristics, a mouth situate very far beneath the nose, spines on the back, and power and swiftness sufficient to enable it to fight the crocodile, are only to be found united in certain of the genus ‘Squalus,’ such as the ‘Squalus centrina,’ and the ‘Squalus spinax’ of Linnæus.”