Caribbean hermit crab right claw and is purple in color. Female land hermit crabs release fertilized eggs into the ocean. The spawning (called "washing" in the English-speaking Caribbean) occurs on certain nights, usually around August. This species is one of the two land hermit crabs commonly sold in the United States as a pet, the other being the Ecuadorian hermit crab. "C. clypeatus" has been confirmed to live as long as 12 years, and some crab owners have claimed to have crabs live up to 40 years. Caribbean hermit crab The Caribbean hermit crab, Coenobita clypeatus, also known as the soldier crab, the
On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection the connection between natural selection and systems theory. 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Tendency of Varieties to Depart Indefinitely from the Original Type" by Alfred Russel Wallace and an "Extract from an unpublished Work on Species" from Charles Darwin's "Essay"