. An introduction to zoology : for the use of high schools . Fig. 75.—European Land-Tortoise.(After Brehm). Testudo gracca. {. 106 HIGH SCHOOL ZOOLOGY. 12. Finally the Testudinidse embrace tlie truly terrestrial tortoiseslepresciited by one species iu the iSouthern States, but occurring ubuud-autly in the warmer parts of the Old and New Worlds. (l*ig. 75). 13. The genus Hatteria (Fig. 76), refei-red to above is mostnearly related in its habits and form to the Lizards, Lacertilia,but there are some respects in which its structure is muclimore primitive; , its vertebrae are ampliicoelous and
. An introduction to zoology : for the use of high schools . Fig. 75.—European Land-Tortoise.(After Brehm). Testudo gracca. {. 106 HIGH SCHOOL ZOOLOGY. 12. Finally the Testudinidse embrace tlie truly terrestrial tortoiseslepresciited by one species iu the iSouthern States, but occurring ubuud-autly in the warmer parts of the Old and New Worlds. (l*ig. 75). 13. The genus Hatteria (Fig. 76), refei-red to above is mostnearly related in its habits and form to the Lizards, Lacertilia,but there are some respects in which its structure is muclimore primitive; , its vertebrae are ampliicoelous and itspineal body (I. 36), presents more nearly the structure of aneye than does that of any other living reptile. Unlike tlieLizards its quadrate bone is united firmly with the skull, andby an arch below the eye with the Fig. 76.—Hatteria ptinctata. J.(After Brehni). 14. In spite of tlie difference in habit between the extremeforms of the Chelonian series, there is not so much difference inexternal appearance as we meet with in the second order—theLacertilia. A few aquatic forms belonging to the Varanidas, HIGH SCHOOL ZOOLOGY. 107 like the large water-lizards of the Nile, do not exhibit any specialadaptation for locoiuotion in water. Most of the forms areterrestiial in their habits while some are arboreal, and otherslead a subterranean life. In accordance with such differencesin the surroundings, we find great differences of external members of the order ai-e especially abundant towards thetropics, only two families being represented further north bythe Blue-tailed Skink (Eumeces quinquelineatus) and the BrownSwift or Pine-treo lizard (Sceloporus unduhihis). Both ofthese lizards are of small size and veiy active creatures, thelast mentioned belonging to a large family the Iguanidae, which
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectzoology, bookyear1889
