The first case contains those lizards of India and Africa which have long held the regard of eastern nations, upon the slender report that they hiss upon the approach of a crocodile, and so warn the incautious traveller to retreat in time.  The truth is, these sauria prey upon the crocodile’s eggs, no doubt to the particular annoyance of the crocodile, who are, therefore, it is more than probable, no friends of the monitors.  The Egyptian would love the monitor for feeding upon the crocodile germ, as much as for his timely warning of the approach of the uncouth enemy.  The curious heloderms, from Mexico, with their ophidian teeth, lie at the bottom of the fifth case:  they are supposed, but as yet on insufficient grounds, to be poisonous.  In the next case (6) are the lizards of tropical America, called safeguards.  Their reputed peculiarity is that, of beating beehives till they compel the bees to retire, and then feasting upon the sweet booty:  in the same case with these, is the lizard with the double-keeled tail, known as the crocodilurus.  The visitor next faces a case (7) of Serpent Lizards, which do not deserve their reputation for poisonous properties, being quite harmless:  here, also, are the Skinks and other varieties, including the blind worms with their hidden legs.  Having dismissed the serpent lizards, the visitor will notice the Night Lizards and Guanas.  The former are inhabitants of warm climates, and from the ease with which they can adapt themselves to any positions, they may be troublesome visitors; they can run with ease about the walls and ceilings of rooms, like flies; and their propensity is to roam abroad in the darkness of the night.  Their broad, ugly heads, and repulsive general appearance, have won for them the character of poisonous reptiles, but the truth is they are harmless.  The Crested Lizards which the visitor will notice hereabouts, are the American fruit-eating species, celebrated for violent quarrelling among themselves, and for their power of changing colour with great rapidity.  They do not crawl upon the earth, but live on trees, the fruits of which sustain them.  Here, too, are the Anoles, with their distended toes, that enable them to imitate the crawling feats of the night lizards.  The tenth case devoted to the lizard tribe, is the most interesting of the series.  It contains the family of lizards known as the Agama.  This family boasts many famous scions.  First, here are the Indian dragons; their resemblance to the fabled monster slain by St. George, consists of a loose skin over the ribs, which they can open or fold at pleasure.  These bat-like wings will not support them in the air, but serve to steady their bodies when leaping from branch to branch of a tree.  From these lilliputian representatives of the monster of fable, the visitor’s attention will most probably be called by an important-looking lizard, of which Mr. Allan Cunningham brought the first specimens to this country, from Port Nelson, Australia.  We