LIZARDS. 133 
Both sexes have three dewlaps, one in the middle of the throat, 
and one on each side. The males possess the larger gular 
appendages, the centre dewlap sometimes being twice the length 
of the head in depth. These ornamental wattle-like possessions 
can be erected at will. The Dragons, which are confined to the 
Kast Indies, never attain a greater length than Tin. or 8in., of 
which the tail forms one-half at least. 
The Frilled Lizard (Chlamydosaurus king’) is another very 
extraordinary Reptile belonging to this family. It is a native of 
Queensland, and attains a length of about 2ft. It possesses round 
its neck a fold of skin which, when erected, reminds one of the 
huge lace collars formerly worn by the fashionable in Queen 
Hlizabeth’s reign. It spreads about 5in., somewhat in shape of 
an open umbrella. The edges of this frill are serrated. The 
animal has rather large and prominent eyes and a long tail, and 
is said to squat and jump in kangaroo fashion, “thus,” as Dr. 
Giinther says, “ reminding us of the peculiar locomotion ascribed 
to certain gigantic extinct Reptiles.”” Some living specimens of 
this interesting Lizard were lately in the Reptile House of 
the Zoological Gardens, Regent’s Park, London. 
The Agamide are chiefly distinguished from the Jywanide by 
having acrodont teeth. Those Agamide which live generally in 
trees possess compressed bodies, while those which confine them- 
selves for the most part to the ground, have depressed bodies. 
The former own the longer tail; the tails do not easily break. 
The head is covered with small flat or convex shields; and the 
thick tongue is more or less fixed to the bottom of the mouth, 
and is not nicked in front, or only feebly so. The eyes, which 
possess eyelids, have round pupils; and the limbs are well 
developed. Like the IJguanide, many of the Agamide are 
provided with crests and gular appendages, 
The following are some of the Agamide which can be kept in 
confinement in this country. 
The Knob-nosed Lizard (Lyriocephalus scutatus) has, as its 
name implies, a curious lump on the nose. Its head is lyre- 
shaped or lyrate (hence generic name), and its throat sac is fairly 
developed. There is a small toothed crest running along the 
animal’s neck, back, and. tail; the scales on the body are very 
