its hind legs. It will gulp and bolt food as large as itself.

THE LEOPARD LIZARD.

In color it is yellow, spotted with dark spots and lined across the back
with dull red lines. Its habitat includes Oregon, California, Nevada,
Arizona, New Mexico and Texas.

THE ZEBRA-TAILED LIZARDS.

These are small ground lizards found from Texas to California,
especially in the dry sections. They run with great rapidity with the
tail curved upward, which exposes the markings of the lower surface.
Frequently they run like the Collared Lizard, on the hind feet. The
black-and-white tail markings account for their name.

THE SPOTTED LIZARDS.

These are small ground lizards found in many states from Kansas to
California and southward. They are very quick in their movements. Their
food consists of insects of the more sluggish type. They do not stalk
their prey like the chameleons.

THE SWIFTS.

There are a great many species of these small lizards in the United
States. They live on the ground among rocks in dry places and are called
swifts on account of the speed with which they are able to get over the
ground. Some of them are covered with spiny scales. Clark's Swift is
abundant in certain parts of the country. It is found in California,
Arizona, New Mexico, Nevada, Utah. It is fond of the strongest sunlight.
The Yellow Striped Swift is found from Texas to Nebraska on the north,
into Mexico on the south and California on the west.

The Common Swift is found abundantly both in the eastern and in the
western United States. They like dry, sandy places among fallen trees,
fences, old wood, etc. In color they are gray and are usually in harmony
with their surroundings.

The Collared Swift lives among rocks in Arizona, New Mexico and Texas.
It has a black collar with very sharp spiny scales.

THE HORNED LIZARD.

These lizards are commonly called Horned Toads, because of their
resemblance in the shape of their bodies to that of a toad and of their
spiny scales which have the appearance of small horns. Their habitat is
in the hottest and driest parts of the country. They are fond of the
hottest sunlight and bury themselves in sand at the approach of evening.

The Regal Horned Lizard is found in Arizona and Colorado.

The California Horned Lizard is found abundantly in sections of
California.

[Illustration: HORNED TOAD.]

THE SNAKE-LIKE LIZARDS.

These lizards have elongated bodies with either small limbs or no