. Outlines of zoology. Fig. 339. -Lateral view of brain of Hatteria punctata.—After Osawa. l-iz, Cranial nerves; ^ parietal eye; , pineal gland ; o., opticlobe; c, cerebellum; w, fourth ventricle; /»., infundibulumand pituitary body. The opening of the cloaca is transverse. There is a urinarybladder, corresponding to that of the frog, and a double are oviparous, but in a few the eggs are hatched withinthe body. They are usually active, agile animals, beautifullyand often protec-tively tail is readilythrown off by areflex action ; losttails and even legsmay be re
. Outlines of zoology. Fig. 339. -Lateral view of brain of Hatteria punctata.—After Osawa. l-iz, Cranial nerves; ^ parietal eye; , pineal gland ; o., opticlobe; c, cerebellum; w, fourth ventricle; /»., infundibulumand pituitary body. The opening of the cloaca is transverse. There is a urinarybladder, corresponding to that of the frog, and a double are oviparous, but in a few the eggs are hatched withinthe body. They are usually active, agile animals, beautifullyand often protec-tively tail is readilythrown off by areflex action ; losttails and even legsmay be food generallyconsists of insects,worms, and other small animals, but some prey upon largeranimals, and others are vegetarian. Most are terrestrial,some arboreal, a few semi-aquatic, and there is one marineform. Lizards are most abundant in the tropics, and areabsent from very cold Fig. 340.—Hatteria or Sphenodon.—AfterHayek. 622 REPTIUA. Description of a Lizard as a type of Reptiles The following description applies especially to the long-tailed green lizard (Lacerta viridis), found abundantly inJersey, but, except in minor points, it will be found to applyequally to the small British grey lizard (Lacerta agilis) andto the viviparous lizard (Lacerta vivipara):— Form and external features.—The depressed head isseparated from the body by a distinct neck, but theposterior region of the body passes gradually into thelong tail, which is often mutilated in captured fore- and hind-limbs are present, and both are fur-nished with five clawed digits. Of the apertures of thebody, the large mouth is terminal, the external nares areclose to the end of the snout, and the cloacal aperture isa considerable transverse opening placed at the root of thetail. There is no external ear, but the tympanic membraneat either side is slightly depressed below the le
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Keywords: ., boo, bookcentury1900, booksubjectzoology, common=tuatara, taxonomy
