Periclimenes dardanicola chiefly white, with red along the edges of the carapace and the abdominal somites. The legs are transparent yellow, with red bands. "P. dardanicola" is associated with the sea anemone "Calliactis", which is carried by hermit crabs of the genus "Dardanus", including "Dardanus arrosor", "D. crassimanus", "D. lagopodes" and "D. pedunculatus". This is one of the few examples of ecological associations between two species of decapod crustaceans. Specimens of "Periclimenes dardanicola" have been collected from various locations in the western Pacific Ocean, namely Suruga Bay (Japan), Vietnam, and Borneo (Indonesia). Although only formally described in 2006, this species has been
On the Tendency of Species to form Varieties; and on the Perpetuation of Varieties and Species by Natural Means of Selection paper, consisting of the letter and papers, was published in the "Zoological Journal of the Linnean Society 3" (20 August): 46–50. The paper consisted of a communication letter by Joseph Dalton Hooker and Charles Lyell dated 30 June 1859, giving information on the three sections of the papers. The introduction is shown below, along with the section headings: MY DEAR SIR,—The accompanying papers, which we have the honour of communicating to the Linnean Society, and which all related to the same subject, viz. the Laws which affect the Production of Varieties, Races, and Species, contain the results of the investigations