snake-eyed skink

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snake-eyed skink

any of about 35 species of lizards constituting two genera (Ablepharus and Cryptoblepharus) in the family Scincidae. Snake-eyed skinks lack eyelids and have transparent scales (spectacles) covering the eyes similar to those of snakes. Although the function of the spectacle remains unknown, it likely reduces water loss by evaporation from the head region. Spectacles in these two skink genera evolved independently and thus represent an example of convergent evolution. The spectacle is derived from the lower eyelid, which is fused to scales above the eye

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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