. La biblioteca del naturalista : contenente descrizioni scientifiche e popolari dell'uomo, dei quadrupidi, degli uccelli, dei pesci, dei rettili e degli insetti . la coda, trattenendo le mani ; e tenendole con una stretta salda, l'animale è in grado di girarsi sufficientemente per mordere la mano che lo tiene veloce. IL VIPER.i CORNATO i cerastes, o vipera homed, che comunemente cresce alla lunghezza ofabout un piede o quindici pollici, ma a volte più di due piedi, è distin-guished da una coppia di corna o processi curvi, situato sopra gli occhi, e Vipera cerastes, C vv. REPTILIA - AMPHISBiENA. 709 puntamento in forw

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. The naturalist's library : containing scientific and popular descriptions of man, quadrupeds, birds, fishes, reptiles and insects . the tail, withtheir hands ; and holding them with a firm grasp, the animal is altogethermcapable of turning itself sufficiently to bite the hand that holds it fast. THE HORNED VIPER.i The cerastes, or homed viper, which commonly grows to the length ofabout a foot or fifteen inches, but sometimes more than two feet, is distin-guished by a pair of horns or curved processes, situated above the eyes, and Vipera cerastes, C vv. REPTILIA—AMPHISBiENA. 709 pointing forward ; these horns have nothing analogous in their structure tothe horns of quadrupeds, and are by no means to be considered in the lightof either offensive or defensive weapons ; they are moveable, and about onesixth of an inch long. The head of the cerastes is flattened ; the muzzle thick and short; the eyeyellowish green. The hind part of the head is narrower than the part ofthe body to which it is attached. The scales of the head are of the samesize with those on the back, or only a little less; and all the scales are oval. with a longitudinal rid^e. The general color of the back is yellowish, withirregular spots of different degrees of darkness, in form of transverse bands.The under surface of the body is brighter. The cerastes inhabits the great-est part of the eastern continent, especially the desert sandy part of it. Itabounds in the three Arabias, and in Africa. In Egypt, it appears to be par-tially domesticated, as it will enter the houses when the family are at table, pick up the scattered crumbs, and retire without doing injury to any one. This animal can endure hunger and thirst much longer than most serpents;some naturalists assert that it can exist five years without nourishment. THE AMPHISB^NA.i This genus grows usually to the length of one or two feet, of which thetail never exceeds an inch, or an inch and a quarter. It is from the extremi-ties of its body bein

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• bookauthordwightjonathan185
• bookcentury1800
• booksubjectzoology