"The Sand Lizard is a common European lizard, about seven inches long, of which the tail is four. Usual color, sandy-brown, with obscure longitudinal bands of a darker hue, line of round black spots on side. The female lays 12 to 14 eggs in the sand, covers them, and leaves them to be hatched by solar heat."—(Charles Leonard-Stuart, 1911)

Sand Lizard

"The Sand Lizard is a common European lizard, about seven inches long, of which the tail is four. Usual…

Found in Brazil and Guiana, the variegated lizard (or teguexin) preys on mice, frogs, and other small animals. It can reach sizes of up to 6 feet in length.

Variegated lizard

Found in Brazil and Guiana, the variegated lizard (or teguexin) preys on mice, frogs, and other small…

The four-toed worm lizard (Chirotes canaliculatus) is a reptile of the Amphisbaenidae family of usually legless lizards.

Four-Toed Worm Lizard

The four-toed worm lizard (Chirotes canaliculatus) is a reptile of the Amphisbaenidae family of usually…

A pair of megalosauruses, with a group of pterodactyls in the background.

Megalosaurus and pterodactyls

A pair of megalosauruses, with a group of pterodactyls in the background.

Some Mesozoic reptiles. Shown are the Brontosaurus, Stegosaurus, Pterodactyl, Camptosaurus, and the Diplodocus. The six-foot man is drawn to the same scale as the other animals.

Mesozoic Age Reptiles

Some Mesozoic reptiles. Shown are the Brontosaurus, Stegosaurus, Pterodactyl, Camptosaurus, and the…

"Monitor of the Nile (Monitor niloticus)." —The Encyclopedia Britannica, 1910

Monitor Niloticus

"Monitor of the Nile (Monitor niloticus)." —The Encyclopedia Britannica, 1910

Averaging six inches in length, the mud-tortoise is evenly distributed throughout the United States.

Mud-tortoise

Averaging six inches in length, the mud-tortoise is evenly distributed throughout the United States.

The musk tortoise draws its namesake from its strong musky odor. It is found from Maine to Florida.

Musk-tortoise

The musk tortoise draws its namesake from its strong musky odor. It is found from Maine to Florida.

Commonly known as the horned toad, Douglas's phrynosoma was first discovered in Salt Lake Valley.

Douglas's phrynosoma

Commonly known as the horned toad, Douglas's phrynosoma was first discovered in Salt Lake Valley.

"So peculiar and strange is the structure of these animals, that the first specimen discovered was classed by one naturalist as a bird, by another as a species of bat, and by yet a third as a flying reptile." — Goodrich, 1844

Pterodactyle skeleton

"So peculiar and strange is the structure of these animals, that the first specimen discovered was classed…

A female python guarding her clutch of eggs.

Python and eggs

A female python guarding her clutch of eggs.

This illustration represents a skeleton of another species of ancient amphibian reptiles.

Raniceps Lyellii

This illustration represents a skeleton of another species of ancient amphibian reptiles.

A rattlesnake's rattle, with twenty-four joints.

Rattlensnake rattle

A rattlesnake's rattle, with twenty-four joints.

Dissection of head of rattlesnake; showing fangs (f) and poison sac (p).

Rattlesnake

Dissection of head of rattlesnake; showing fangs (f) and poison sac (p).

A poisonous snake, known for using its "rattle" to warn off predators.

Rattlesnake

A poisonous snake, known for using its "rattle" to warn off predators.

"Rattlesnake is the English name for any species of the American genus Crotalus, the tail of which is furnished with a rattle. Garman enumerates 12 species and 13 varieties. The poison of the rattlesnake is usually fatal to man, though fortunately they are sluggish, and never attempt to strike unless they are molested. They are widely distributed on the American continent; but advancing civilization is rapidly thinning their numbers."—(Charles Leonard-Stuart, 1911)

Rattlesnake

"Rattlesnake is the English name for any species of the American genus Crotalus, the tail of which is…

A large reptile sunning itself on a rocky island.

Reptile

A large reptile sunning itself on a rocky island.

A frame surrounded by various reptiles.

Reptiles

A frame surrounded by various reptiles.

"The common snake of Europe... frequents woods, bogs, and other sheltered situations in the vicinity of water." — Goodrich, 1859

Common ring-snake

"The common snake of Europe... frequents woods, bogs, and other sheltered situations in the vicinity…

The Secretary Bird (Sagittarius serpentarius) is a bird of prey known for hunting snakes and other reptiles.

Secretary Bird

The Secretary Bird (Sagittarius serpentarius) is a bird of prey known for hunting snakes and other reptiles.

Miraculous escape from the royal serpent of Ceylon. Caption bellow illustration: "In dreadful anticipation of the worst, I looked around, when I saw a monstrous serpent of enormous size crawling slowly out of the opening I had just entered but a few minutes before."

Escape from the Serpent of Ceylon

Miraculous escape from the royal serpent of Ceylon. Caption bellow illustration: "In dreadful anticipation…

A cobra, or hooded serpent. This species can be found in India.

Hooded serpent

A cobra, or hooded serpent. This species can be found in India.

The sandfish (Scincus scincus) is a species of skink known for burrowing into the sand.

Sandfish Skink

The sandfish (Scincus scincus) is a species of skink known for burrowing into the sand.

Common in Europe, the slow-worm resembles a snake, but its internal structure is that of lizards.

Slow-worm

Common in Europe, the slow-worm resembles a snake, but its internal structure is that of lizards.

Structure of internal anatomy of a snake.

Snake

Structure of internal anatomy of a snake.

Snakes belong to the group known as Squamata.

Snake

Snakes belong to the group known as Squamata.

"Snake's head. dv., Poison fangs; b., sheath of fang; l., tongue; rl., muscles of tongue." -Thomson, 1916

Snake Head

"Snake's head. dv., Poison fangs; b., sheath of fang; l., tongue; rl., muscles of tongue." -Thomson,…

A snake slithering on the ground.

Snake slithering

A snake slithering on the ground.

The anaconda (Eunectes murinus) is a non-venomous snake in the Boidae family of boas.

Anaconda

The anaconda (Eunectes murinus) is a non-venomous snake in the Boidae family of boas.

The Javelin Sand Boa (Eryx jaculus) is a snake in the Boidae family of boas.

Javelin Sand Boa

The Javelin Sand Boa (Eryx jaculus) is a snake in the Boidae family of boas.

"Four to five feet long; color yellowishgray, cleaning with a pale golden hue, and dotted with whitish and black; native of Mexico." — -Goodrich, 1859

Golden tree snake

"Four to five feet long; color yellowishgray, cleaning with a pale golden hue, and dotted with whitish…

The Mud Snake (Farancia abacura) is a reptile in the Colubridae family of colubrid snakes native to the southeastern United States.

Mud Snake Slithering through Grass

The Mud Snake (Farancia abacura) is a reptile in the Colubridae family of colubrid snakes native to…

The Sea Snake (Pelamis bicolor) is a tropical sea snake known for its black color on top and yellow belly.

Sea Snake

The Sea Snake (Pelamis bicolor) is a tropical sea snake known for its black color on top and yellow…

"The muzzle of H. tentaculatus is furnished with two soft prominences, covered with scales, the use of which is not ascertained. The tail is long and pointed." — Goodrich, 1859

Herpeton tentaculatus

"The muzzle of H. tentaculatus is furnished with two soft prominences, covered with scales, the use…

Common around New York and the surrounding regions, the red-bellied terrapin averages ten to seventeen inches in length.

Red-bellied terrapin

Common around New York and the surrounding regions, the red-bellied terrapin averages ten to seventeen…

The salt-water terrapin lives in salt or brackish water along the sea-coast, buying itself in the mud during winter.

Salt-water terrapin

The salt-water terrapin lives in salt or brackish water along the sea-coast, buying itself in the mud…

The smooth terrapin is found from Rhode island southward along the eastern coast of the United States.

Smooth terrapin

The smooth terrapin is found from Rhode island southward along the eastern coast of the United States.

An illustration of a California horned toad.

California horned toad

An illustration of a California horned toad.

A tortoise.

Tortoise

A tortoise.

An illustration of a tortoise reaching his goal along a long path.

Tortoise Reaching Goal

An illustration of a tortoise reaching his goal along a long path.

An illustration of a tortoise with a top hat and an umbrella.

Tortoise with Top Hat & Umbrella

An illustration of a tortoise with a top hat and an umbrella.

Primarily nocturnal, the matamata tortoise of South America feeds on small reptiles and fish.

Matamata tortoise

Primarily nocturnal, the matamata tortoise of South America feeds on small reptiles and fish.

Found in the rivers and lakes of the western and southern United States, the soft-shelled tortoise feeds on fish and small aquatic reptiles.

Soft-shelled tortoise

Found in the rivers and lakes of the western and southern United States, the soft-shelled tortoise feeds…

Feeding primarily on worms and insects, the spotted tortoise averages three to four inches in length.

Spotted tortoise

Feeding primarily on worms and insects, the spotted tortoise averages three to four inches in length.

This illustration shows the three-toed tracks of birds and reptiles.

Tracks

This illustration shows the three-toed tracks of birds and reptiles.

"Tuatera is a large lizard from New Zealand; apparently carnivorous, and in captivity are fed on raw meat, living frogs, small lizards, earthworms, mealworms, snails, young birds, or mice."—(Charles Leonard-Stuart, 1911)

Tuatera

"Tuatera is a large lizard from New Zealand; apparently carnivorous, and in captivity are fed on raw…

The green turtle (Chelonia mydas) is a large sea turtle and the only member of the species Chelonia.

Green Turtle

The green turtle (Chelonia mydas) is a large sea turtle and the only member of the species Chelonia.

The Hawksbill Turtle (Eretmochelys imbricata) is a species in the Chelonioidea of sea turtles.

Hawksbill Turtle

The Hawksbill Turtle (Eretmochelys imbricata) is a species in the Chelonioidea of sea turtles.

An imbrcated turtle on land.

Imbricated turtle

An imbrcated turtle on land.

An imbricated turtle, flipped onto its back, revealing its underbelly.

Imbricated turtle, overturned

An imbricated turtle, flipped onto its back, revealing its underbelly.

The leatherback turtle (once known as the leathery turtle) is remarkable among turtles for its shell; which is covered in leathery skin rather than hard plates.

Leatherback turtle

The leatherback turtle (once known as the leathery turtle) is remarkable among turtles for its shell;…

Skeleton of a turtle.

Skeleton of a turtle

Skeleton of a turtle.

Inhabiting freshwater areas of the United States, the snapping turtle feeds on frogs and fishes.

Snapping turtle

Inhabiting freshwater areas of the United States, the snapping turtle feeds on frogs and fishes.

"The turtle, adapted for swimming and diving, the extremities being relatively larger than in the seal, sea-bear, and walrus. The anterior extremities have a thick anterior margin and a thin posterior one, and in this respect resemble wings."—Pettigrew, 1874

The Turtle

"The turtle, adapted for swimming and diving, the extremities being relatively larger than in the seal,…

Section of the head of a serpent. a, poison fangs; b, poison glands; c, conductor for the poison; d, muscles of the jaws; e, tendon of the muscles; s, salivary glands.

Cross section of a viper head

Section of the head of a serpent. a, poison fangs; b, poison glands; c, conductor for the poison; d,…

Found in Europe from Sweden to the Medittanean Sea, the black viper is also the only venemous reptile in Grat Britain.

Black viper

Found in Europe from Sweden to the Medittanean Sea, the black viper is also the only venemous reptile…

Sometimes referred to as the fresh-water terrapin, the wood-terrapin ranges from Canada to Pennsylvania.

Wood-terrapin

Sometimes referred to as the fresh-water terrapin, the wood-terrapin ranges from Canada to Pennsylvania.

Zonurus, the type genus of Acanthocercus, with several species from the S. and E. of Africa and Madagascar.

Zonurus

Zonurus, the type genus of Acanthocercus, with several species from the S. and E. of Africa and Madagascar.