The Geographical Distribution of Animals, Volume 2 / With a study of the relations of living and extinct faunas as elucidating the past changes of the Earth's surface

by Alfred Russel Wallace

Family 99.—CARCHARIIDÆ. (11 Genera, 59 Species.)

"Sharks with two dorsals and a nictitating membrane."

Distribution.—Seas of the Arctic, temperate, and tropical regions. Species of Galeus and Mustelus have occurred on our coasts.

Family 100.—LAMNIDÆ. (5 Genera, 7 Species.)

"Sharks with two dorsals and no nictitating membrane."

Distribution.—Temperate and tropical seas. Species of Lamna, Alopecias, and Selache have occurred in British seas.

Family 101.—RHINODONTIDÆ. (1 Genus, 1 Species.)

"Sharks with two dorsal fins, the second small, and no nictitating membrane."

Distribution.—South and East Africa.

Family 102.—NOTIDANIDÆ. (1 Genus, 4 Species.)