The animal kingdom : arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy . s blade; two small crests oneach side of the base of the caudal, as in the Mackerel. [These lateral crests on the tail appear to steady thatpowerful organ, and thus render it more eflicient and unerring in its intense labour.] One species inhabits , hke the former, but wants the ventral plates; rather a doubtful species. Istiuphoru*, has the beak and caudal crests like Tetrapturus, but the dorsal high, and serving as a sail inswimming;
The animal kingdom : arranged after its organization, forming a natural history of animals, and an introduction to comparative anatomy . s blade; two small crests oneach side of the base of the caudal, as in the Mackerel. [These lateral crests on the tail appear to steady thatpowerful organ, and thus render it more eflicient and unerring in its intense labour.] One species inhabits , hke the former, but wants the ventral plates; rather a doubtful species. Istiuphoru*, has the beak and caudal crests like Tetrapturus, but the dorsal high, and serving as a sail inswimming; and the long and slender ventrals are composed of two rays each. Several species have been named,but they are imperfectly known. .\ll the Sword-lishes attain a lai^e size, [and the dorsal fin is subjectto variations]. Centronotus, a genus having free spines in-stead of the first part of the dorsal, and ventralsin all the species. The subgenera are,— Xaucratex, the Pdot-fish, has spindle-shaped body,free dorsal spines, keel on the tail as in the Herring,and tivo free-spines before the anal. The Common Fig. 135.—Tne Piiot-fi«i. Fig \M .—Xiplilu cltilh
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Keywords: ., bookauthorwe, bookcentury1800, bookdecade1840, booksubjectanimals
