Prima lezione di zoologia : adatta per l'uso nelle scuole . collaborato le tinte della vegetationor terreno su cui vivono; alcuni sono in grado di changingtheir colore a piacimento, come il camaleonte e Anolis; questo isdue per il fatto che il pigmento o colore-cellule sono sottoil influenza delle creature. In molti lucertole {Lacerta, Iguana, e i gechi) le lucertole, serpenti e altri rettili. 185 medio di ciascuna vertebra caudale presenta una sottile cartilagineo par-tition, ed è a questo punto che le code di questi lizardsbreak ofE così facilmente quando il grippaggio. In tali casi la coda isrenewed, ma è più stu

• Collaboratore: The Reading Room / Alamy Foto Stock
• ID dell’immagine: 2AKRXAB
• Dimensioni dei file: 7,1 MB (190,1 KB Download compresso)
• Liberatorie: Modello - no | Proprietà - no
• Dimensioni: 3021 x 827 px | 25,6 x 7 cm | 10,1 x 2,8 inches | 300dpi

Altre informazioni

Questa foto è un'immagine di pubblico dominio, il che significa che il copyright è scaduto o che il titolare del copyright ha rinunciato a tale diritto. Alamy addebita un costo per l'accesso alla copia ad alta risoluzione dell'immagine.

Questa immagine potrebbe avere delle imperfezioni perché è storica o di reportage.

First lesson in zoology : adapted for use in schools . ating the tints of the vegetationor soil on which they live; some are capable of changingtheir color at will, as the chameleon and Anolis; this isdue to the fact that the pigment- or color-cells are underthe influence of the creatures will. In many lizards {Lacerta, Iguana, and the Geckos) the THE LIZARDS, SNAKES, AND OTHER REPTILES. 185 middle of each caudal vertebra has a thin cartilaginous par-tition, and it is at this point that the tails of these lizardsbreak ofE so easily when seized. In such cases the tail isrenewed, but is more stumpy. Both jaws are provided with teeth, while some have themdeveloped on the bones of the mouth. Most lizards preyon insects ; some live on plants. The eyelids are well de-veloped except in the Geckos, in which, as in the snakes, there is a transparent sack filled with fluid over the corneaor ball of the eyes. The tongue is free and long, some-times forked; in the iguana it ends in a horny point. Lizards lay their eggs in the sand or soil. The iguana.. Fio. 190.—West Indian Gecko. or great lizard of the West Indies, deposits hers in the hol-lows of trees. Certain kinds are viviparous. Our most common lizard in the Middle and SouthernStates is Sceleporus undulatus; it is about six inches long, gray, with dark wavy bands, and may be<^ seen in sunnyglades running up the trunks of trees. It is evident that this lizard is protected by its resem-blance, when at rest, to the bark of the pine. The iguanasare very large, being nearly three feet in length, but rathersluggish lizards, with a dorsal row of high, thin spines.They are said to be excellent eating. The horned toads {Phrynosoma, Fig. 191) are char-acteristic of the dry Western plains; the body is broad, flattened, and spiny. Their color is like that of the soilthey inhabit; hence, protected by their color and theirstrong spines, they are probably not often snapped up bybirds. Like all other lizards, the horned toad can with-

Parole chiave associate all'immagine

• bookcentury1800
• bookdecade1890
• booksubjectzoology
• bookyear1894