Fishes . Fig. 378.—Cutlass-fish, Trichiurus kpturus Linna>us. St. .\usustine, Fla. in Japan, and other species inhabit the tropical seas. Tri-chiurichtliys, a fossil genus with well-developed scales, precedesTrichiurus in the Miocene. The Palaeorhynchidae.—The extinct family of Palaorhynchidcsis found from the Eocene to the Oligocene. It contains very. < Fig. 379.—Palceorhynchus glarisianus Blainville. Oligocene. (After Woodward.) long and slender fishes, with long jaws and small teeth, thedorsal fin long and continuous. The species resembles theEscolar on the one hand and the sailfishes
Fishes . Fig. 378.—Cutlass-fish, Trichiurus kpturus Linna>us. St. .\usustine, Fla. in Japan, and other species inhabit the tropical seas. Tri-chiurichtliys, a fossil genus with well-developed scales, precedesTrichiurus in the Miocene. The Palaeorhynchidae.—The extinct family of Palaorhynchidcsis found from the Eocene to the Oligocene. It contains very. < Fig. 379.—Palceorhynchus glarisianus Blainville. Oligocene. (After Woodward.) long and slender fishes, with long jaws and small teeth, thedorsal fin long and continuous. The species resembles theEscolar on the one hand and the sailfishes on the other, andthey may prove to be ancestral to the Istiophoridcs. Hemi-rhynchiis deshayesi with the upper jaw twice as long as thelower, sword-like, occurs in the Eocene at Paris; Palaorhynchumglarisianum, with the jaws both elongate, the lower longest, isin the Oligocene of Glarus. Several other species of both generaare recorded. The Sailfishes: Istiophoridae.—Remotely allied to the cutlass-fishes and still nearer to the PalcEorhynchidcs is the family ofsailfishes, Istiophoridcc, having the upper jaw prolonged into 484 Percomorphi a sword made of consolidated bones. The teeth are very feebleand the ventral fins reduced to two or three rays. The speciesare few in number, of large size, and very bnlhant metalliccoloration, inhabiting the
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