The natural history of fishes, amphibians, & reptiles, or monocardian animals . CARTlLAGINES. Cartilaginous Fishes. Bones cartilaginous; branchia or gills concealed beneaththe skin, upon which, however, there are as many smallapertures as there are internal rays; fins in generalperfect; body either pisciform*, or suborbicular andgreatly compressed. FA3IILY. 1. SQUALID^. Sharks. Body pisciform ; all the fins free and distinct; snoutor fore part of the head more or less broad and pro-truded beyond the mouth, which is placed beneath ;teeth 1. SuBFAM. SQUALIN^. Typical Sharks. Spiracles or
The natural history of fishes, amphibians, & reptiles, or monocardian animals . CARTlLAGINES. Cartilaginous Fishes. Bones cartilaginous; branchia or gills concealed beneaththe skin, upon which, however, there are as many smallapertures as there are internal rays; fins in generalperfect; body either pisciform*, or suborbicular andgreatly compressed. FA3IILY. 1. SQUALID^. Sharks. Body pisciform ; all the fins free and distinct; snoutor fore part of the head more or less broad and pro-truded beyond the mouth, which is placed beneath ;teeth 1. SuBFAM. SQUALIN^. Typical Sharks. Spiracles or air-holes behind the eyes either entirelywanting, or exceedingly minute, so as to become obso-lete ; dorsal fins two, without spines. Squalus Linn. Spiracles entirely wanting; snoutbroad, depressed ; teeth compressed, cutting, andpointed, generally toothed or serrated on their sides ;first dorsal fin before the pectoral, the second nearlyopposite to the anal; nostrils placed under the mid-dle of the snout; the posterior branchial aperturesextending above the pectoral S. Carcharias. Linn. Belon. glaucus. Bloch, pi. 86. pi. 60. ii. 381. * By this term is meant that form seen in the generality of fishes.+ Except in such types as form the passage to the rays, as Pristis andMustelus, SQUALID^. SQUALINiE. 313 Alopias Raf. Spiracles none; dorsal fins two^ theposterior adipose ; tail and caudal fin very long^ un-equally and obliquely divided ; the former as long asthe body; muzzle rounded; teeth flat;, minute^ macrourus. Raf. Carat, vulpis Sw. Yarr. ii. 379. Cerictius Raf. Spiracles wanting ; dorsal fins two,the posterior much the largest, and bilobed ; branchialapertures five on each side; head with two bonyappendages in the form of horns. C. macrourus. E-af. Carat. Dalatias Raf. Spiracles none; dorsal fins two,furnished with anterior spines ; anal fin wanting;tail unequally and obliquely lobed; teeth unequal,acute, disposed in different directions ; mouth i
Size: 2655px × 941px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1800, booksubj, booksubjectfishes, booksubjectreptiles
