Henry Augustus Pilsbry (7 December 1862 – 26 October 1957) was an American
biologist,
malacologist and
carcinologist, among other areas of study. He was a dominant presence in many fields of invertebrate taxonomy for the better part of a century. For much of his career, his authority with respect to the classification of certain substantial groups of organisms was unchallenged:
barnacles,
chitons, North American terrestrial
mollusks, and others.