The life-history of British lizards : and their local distribution in the British Isles . species, and the sand lizardis constantly being reported from new localities, inScotland for example, in mistake for the common vivi-parous lizard. The absolutely distinctive charactersare few, but most specimens are clearly defined bytheir colours. If the distribution be compared, it willbe at once noted that the sand lizard is very local andcomparatively rare. In the common lizard no teethare to be found on the palate bone, and in normalspecimens there is a single post-nasal shield, and asingle anterior
The life-history of British lizards : and their local distribution in the British Isles . species, and the sand lizardis constantly being reported from new localities, inScotland for example, in mistake for the common vivi-parous lizard. The absolutely distinctive charactersare few, but most specimens are clearly defined bytheir colours. If the distribution be compared, it willbe at once noted that the sand lizard is very local andcomparatively rare. In the common lizard no teethare to be found on the palate bone, and in normalspecimens there is a single post-nasal shield, and asingle anterior loreal shield. The scales coveringthe dorsal surface are elongated and hexagonal, andindistinctly keeled as compared with those of thesand lizard. The general shape of the head is moreflattened than in the rare species, and the snout morepointed. The ventral scales are arranged in from sixto eight longitudinal rows: the marginal rows beingthe smallest; the second series on each side from themedian ventral line, the largest.^ In these and other ^ Gadow, Amphibia and Reptiles, p.
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Keywords: ., bookcentury1900, bookdecade1900, booksubject, booksubjectreptiles
