The same applies to the limbless little Ophiopsiseps nasutus of Australia.
But the limbs show with regard to development great variation, and an uninterrupted transition from the most perfect condition of two pairs with five separate clawed toes to their total disappearance; yet even limbless lizards retain bony vestiges beneath the skin.
The motions of these limbless lizards are similar to those of snakes, which they resemble in their elongate body.
Presumably the presence of osteoderms and of complete cranial arches are more archaic than their absence, just as we conclude that limbless forms have been evolved from various groups possessed of fully developed limbs.
Some are entirely arboreal, dwellers in forests, while others, like Cnemidophorus and Asneiva, are strictly terrestrial, with great running powers; a few dwell below the surface and are transformed into almost limbless ' For anatomical detail and experiments, see R.