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
On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection is the title of a joint presentation of two scientific papers to the Linnean Society of London on 1 July 1858: "On The Tendency of Varieties to Depart Indefinitely from the Original Type" by Alfred Russel Wallace and an "Extract from an unpublished Work on Species" from Charles Darwin's "Essay" of 1844, together with an "Abstract of a