Of crustaceans, land-crabs are remarkable for size and number.
Almost all of them are parasitic on other crustaceans.
The Lobster is the largest and strongest of our native crustaceans.
Small crustaceans and other aquatic animals push their way into the bladders and are unable to escape.
Wasmann, who has compiled a list of nearly 1 50o species of insects, arachnids and crustaceans, inhabiting ants' nests.