Many large kinds of guanas inhabit New South Wales; some, which have been described to me, must be enormous reptiles. I have only seen two species, the most common being generally called the sleeping lizard, and is found also in Van Diemen's Land. It is about a foot or fourteen inches in length, the body dark coloured, fat, and bloated-looking, the tail short and thick; the head broad, with a snaky expression, and a long blue tongue, which gives the poor animal a terrible reputation among the vulgar, who declare that so blue a tongue must be a proof of its venomous nature. I believe, if the poor stupid creatures had the sense to keep their ill-hued tongues out of sight, many hundreds would escape violent deaths. Contrary to the habits of most lizards, which are remarkable for their extreme activity and timid alertness on the approach of a footstep, or the slightest noise, the sleeping guana is often seen lying in the midst of the road, and frequently the crushed body of one bears disastrous evidence of the fatal consequences of indolence. Sometimes we have turned aside to avoid driving over them, or have bestowed a light lash of the whip in passing, which only caused them to crawl slowly away, as if our friendly hint were a most officious and impertinent proceeding, and they had rather a preference for being trodden or rolled to death.