Australian land hermit crab Australian land hermit crab The Australian land hermit crab ("Coenobita variabilis") is a terrestrial hermit crab species, native to Australia. It is a nocturnal, omnivorous crustacean. They are gregarious and thrive in tropical areas near water. The Australian land hermit crab is endemic to northern parts of Australia including northern Western Australia, Northern Territory and northern Queensland. The Australian land hermit crab ("Coenobita variabilis") reaches a carapace length of . They closely resemble the Pacific hermit crab ("Coenobita compressus") in appearance and they both have a shortened aquatic development stage. Australian hermit crabs are light brown to pale brown in
History of manifolds and varieties spaces with a differentiable or topological structure, while "variety" refers to spaces with an algebraic structure, as in algebraic varieties. In Romance languages, manifold is translated as "variety" – such spaces with a differentiable structure are literally translated as "analytic varieties", while spaces with an algebraic structure are called "algebraic varieties". Thus for example, the french word "" means topological manifold. In the same vein, the Japanese word "" (tayōtai) also encompasses both manifold and variety. ("" (tayō) means various.) Ancestral to the modern concept of a manifold were several important results of 18th and 19th century mathematics. The oldest