"Sharks with one dorsal fin and no nictitating membrane."
Distribution.—Temperate and tropical seas, from the North Atlantic to the Cape of Good Hope and California. One species has occurred on our southern coasts.
Family 103.—SCYLLIIDÆ. (7 Genera, 25 Species.)
"Sharks with one dorsal fin and no nictitating membrane."
Distribution.—All temperate and tropical seas. Species of Scyllium and Pristiurus are British.
Family 104.—CESTRACIONTIDÆ. (1 Genus, 4 Species.)
"Sharks with two dorsal fins and no nictitating membrane."
Distribution.—Pacific Ocean from Japan to New Zealand, Moluccan Sea.
Family 105.—SPINACIDÆ. (10 Genera, 21 Species.)
"Sharks with two dorsal fins and no nictitating membrane, no anal fin."