Genus: _Monodon monocerus_: Narwhal or Sea Unicorn. Arctic seas south of the ice-field. The male is characterized by an immense tusk, sometimes 9 feet long, projecting like a spear from the left side of the bluntly-rounded muzzle. The tusk is spirally grooved, and is the source of the horn of the unicorn of heraldry. Mottled in color, and about 18 feet long. Genus: _Delphinapterus leucas_: The White Whale or Beluga. Resembles the Narwhal in size, shape, and habitat, but the tusk is absent. Family Delphinidae Genus _Globiocephala_ _G. melas_: Pilot Whale or Black-Fish or Ca’ing Whale. Temperate or tropical seas. Rounded head with dorsal fin. Takes its name from the fact that one whale or pilot leads the way of the sometimes huge schools; about 25 feet. Genus _Orcinus_ _O. orca_: Killer Whale or Grampus. All seas. With a high dorsal fin and black and white coloring, aggressively bold and carnivorous, with singular cunning and intelligence. Fourteen seals and thirteen porpoises have been found in the stomach of a male measuring 21 feet. The male is usually about 30 feet in length. Genus _Pseudorca_ _P. crassidens_: The False Killer Whale or Lesser Killer Whale. All seas. FOOTNOTES [1]Among the many well-known figures of classical mythology said to have been saved by dolphins from the sea are Eikadios, Enalos, Koiranos, Phalanthos, Taras, etc. In many other cases the corpses were brought ashore by a dolphin, which then expired on reaching land (similarly, with minor variations, was this so with Palaimon or Melikertes, Dionysios and Hermias of Iasos, Hesiod, and the boys already referred to from Baiae and Naupaktos). Similar incidents reappear in the writings of the hagiographers. Saints Martinianos of Kaisareia, Kallistratos of Carthage, Basileios the younger of Constantinople, were each saved from a watery grave by a couple of dolphins. The corpse of Saint Loukianos of Antioch was brought ashore by a large dolphin, which then expired on the sand. See Klement, _Arion_, 1-64, and Usener, _Die Sintfluthsagen_, 138-180.