The Goose Barnacle has a body resembling a clam, attached by a soft, flexible stalk to some solid object.

Barnacle

The Goose Barnacle has a body resembling a clam, attached by a soft, flexible stalk to some solid object.

The honey-bee is of European origin, and has long been domesticated.

Honey Bee

The honey-bee is of European origin, and has long been domesticated.

The antenna of the honey-bee.

Honey Bee

The antenna of the honey-bee.

The mandible of the honey-bee.

Honey Bee

The mandible of the honey-bee.

The head of the honey-bee.

Honey Bee

The head of the honey-bee.

The prothorax of the honey-bee.

Honey Bee

The prothorax of the honey-bee.

The tongue of the honey-bee.

Honey Bee

The tongue of the honey-bee.

The mesothorax of the honey-bee.

Honey Bee

The mesothorax of the honey-bee.

The metathorax of the honey-bee.

Honey Bee

The metathorax of the honey-bee.

The abdomen of the honey-bee.

Honey Bee

The abdomen of the honey-bee.

The larva of the honey-bee.

Honey Bee

The larva of the honey-bee.

The pupa of the honey-bee.

Honey Bee

The pupa of the honey-bee.

The pupa of the honey-bee.

Honey Bee

The pupa of the honey-bee.

The worker or infertile female honey-bee.

Honey Bee

The worker or infertile female honey-bee.

The queen or fertile female honey-bee.

Honey Bee

The queen or fertile female honey-bee.

The cells of a bee hive. Note the large, irregular cells are queen cells.

Honey Bee

The cells of a bee hive. Note the large, irregular cells are queen cells.

The Hickory tree-borer is among many beetles whose larvae bore into trees, where they do great damage. This is the larva.

Tree Borer

The Hickory tree-borer is among many beetles whose larvae bore into trees, where they do great damage.…

The Hickory tree-borer is among many beetles whose larvae bore into trees, where they do great damage. This is the pupa.

Tree Borer

The Hickory tree-borer is among many beetles whose larvae bore into trees, where they do great damage.…

The Hickory tree-borer is among many beetles whose larvae bore into trees, where they do great damage.

Tree Borer

The Hickory tree-borer is among many beetles whose larvae bore into trees, where they do great damage.

Centipedes have flattened bodies, with one pair of legs to each segment. They are carnivorous.

Centipede

Centipedes have flattened bodies, with one pair of legs to each segment. They are carnivorous.

This Centipedes has a flattened bodies, with one pair of legs to each segment, but it has less than 100 leg pairs. They are carnivorous.

Centipede

This Centipedes has a flattened bodies, with one pair of legs to each segment, but it has less than…

Centipedes have from fifteen to twenty pair of legs.

Centipede

Centipedes have from fifteen to twenty pair of legs.

The common cockroach, male.

Cockroach

The common cockroach, male.

The common cockroach, female.

Cockroach

The common cockroach, female.

Metamorphosis of the crab; the zoea stage.

Crab

Metamorphosis of the crab; the zoea stage.

Metamorphosis of the crab; the megalops stage.

Crab

Metamorphosis of the crab; the megalops stage.

Metamorphosis of the crab; the adult stage.

Crab

Metamorphosis of the crab; the adult stage.

Crabs have the same essentail structure as crayfishes and lobsters.

Crab

Crabs have the same essentail structure as crayfishes and lobsters.

Hermit crab in shell of sea snail.

Hermit Crab

Hermit crab in shell of sea snail.

Horseshoe crabs represent an order called Xiphosura, from the fact that the end of the abdomen is furnished with a long sword-like spine.

Horseshoe Crab

Horseshoe crabs represent an order called Xiphosura, from the fact that the end of the abdomen is furnished…

Crabs have the same essentail structure as crayfishes and lobsters.

Oyster Crab

Crabs have the same essentail structure as crayfishes and lobsters.

Crabs are ten-footed crustaceans. The abdomen is tucked out of site, so that nothing is visible except the carapace.

Spider-Crab

Crabs are ten-footed crustaceans. The abdomen is tucked out of site, so that nothing is visible except…

Blind crayfish of Mammoth Cave.

Blind Crayfish

Blind crayfish of Mammoth Cave.

The water flea known as Cypris.

Water Flea

The water flea known as Cypris.

The water flea known as Daphnia.

Water Flea

The water flea known as Daphnia.

The water flea known as Cyclops.

Water Flea

The water flea known as Cyclops.

In the Crane Fly, only the front pair of wings is present.

Crane Fly

In the Crane Fly, only the front pair of wings is present.

Lobsters have five pair of legs. The first pair are modified into claws for defense.

Lobster

Lobsters have five pair of legs. The first pair are modified into claws for defense.

Common lobster. I. first pair of legs; 2 and 3. second and third pairs of legs; 4 and 5. last two pair of legs; a smaller antennae; ga greater antennae; ca carapace.

Lobster

Common lobster. I. first pair of legs; 2 and 3. second and third pairs of legs; 4 and 5. last two pair…

The migratory locust travels in enormous numbers and can devour fresh fields to devastation.

Locust

The migratory locust travels in enormous numbers and can devour fresh fields to devastation.

Wood-lice are commonly found under stones or in crevices of old walls. When disturbed, they curl up to protect their soft abdomens.

Wood Louse

Wood-lice are commonly found under stones or in crevices of old walls. When disturbed, they curl up…

Wood-lice are commonly found under stones or in crevices of old walls. When disturbed, they curl up to protect their soft abdomens.

Wood Louse

Wood-lice are commonly found under stones or in crevices of old walls. When disturbed, they curl up…

The mandibles of the common garden spider.

Mandible

The mandibles of the common garden spider.

Millipedes have an indefinite number of legs.

Millipede

Millipedes have an indefinite number of legs.

Scorpions are found in warm climates, reaching their greatest size in tropical America and Africa.

Scorpion

Scorpions are found in warm climates, reaching their greatest size in tropical America and Africa.

Scorpions are characterized by having a distinctly segmented abdomen, which passes into the cephalothorax, without any well-marked line of boundary.

Scorpion

Scorpions are characterized by having a distinctly segmented abdomen, which passes into the cephalothorax,…

Shrimp are a marine crustacean largely used as food.

Shrimp

Shrimp are a marine crustacean largely used as food.

Spider, with cocoon attached to spinnerets.

Spider

Spider, with cocoon attached to spinnerets.

Spiders are distinct from insects by having four pairs of legs.

Spider

Spiders are distinct from insects by having four pairs of legs.

The body of a spider consists of two parts, connected by a constricted waist, the unsegmented cephalpthorax and a large, soft, unsegmented abdomen.

Jumping Spider

The body of a spider consists of two parts, connected by a constricted waist, the unsegmented cephalpthorax…

the spinnerets of the common garden spider that are used to spin webs.

Spinnerets

the spinnerets of the common garden spider that are used to spin webs.