"I am highly honored," said our hero. "But tell me, how do you happen to have that large shell on your back?" "That," replied the Crab, proudly, "is the former home of a Sea-Snail, now alas! no more. You see my name of the Hermit-Crab comes from my liking to conceal my tail, which is long and soft, with two or three hooks on it, in the empty shell of some sea animal, snail, or the like. Unlike the ordinary crabs, our branch of the family all possess these tails. Our only hope of prolonging our existence is to protect this weak tail, so as soon as we are born we crawl into some empty shell, and holding on with the hooks, are thus fairly well protected from attacks in the rear. We can carry the shell about with us, and in time, as we grow bigger, it becomes necessary to find a larger one. The shell in which I now live once belonged to a big snail. It was just the right size for my needs, and, there being no other way out of the difficulty, I was compelled to eat him up in order to get possession of his home. It was a wrong act, the impulse of a moment, and I assure you that I have always deeply regretted the cruel deed," and the Hermit paused to sigh deeply. [Illustration: HERMIT CRAB IN SHELL.] Now Sammy had very small faith in the repentance of the Hermit. In fact he had a suspicion that he was a bloodthirsty old hypocrite, and that those unwary strangers who had come to look for apartments in the past, had never returned alive. This was an uncomfortable thought, so he kept a sharp eye on the Hermit, while he listened to the long description the other gave him of the habits and customs of his family. Our hero was soon to learn that bragging about one's ancestors and connections was not a weakness confined alone to Aunt Sheen, for many other fish possessed it, and this seems strange when they openly declared that they sometimes devoured their younger and weaker relations. The Hermit-Crab belonged to a large family called the Crustaceans. All kinds of crabs, lobsters, as well as shrimps, barnacles, sea-acorns, etc., are members of this family, though all belong to different branches of it. The lobster is first cousin to the crab, though somewhat larger, yet the two resemble each other very closely. The crab has four pairs of legs, as well as a large pair of claws. He is a rapid swimmer, though his sidewise motion gives him a very awkward appearance. And, although a great eater, it hardly seems likely that Mr. Crab ever suffers from indigestion, since nature has given him eight jaws, and a large stomach furnished with teeth. He has also a heart, and liver. The crab, in common with the lobster, possesses one very convenient peculiarity. He can cast off a claw if it is hurt in any way, and he sometimes throws one or two away if he is frightened by thunder, for he is a great coward in a thunder-storm. But, no matter in what way the claw is lost, Mr. Crab can grow another one, although it will not be as large, or as strong as the first one.