A New Shrimp of the Genus Pandalopsis (Decapoda : Caridea : Pandalidae) from the Eastern Pacific, with Notes on its Natural History

A new species of pandalid shrimp, Pandalopsis lucidirimicola, is described. This colorful species occurs in shallow, current-swept areas of Washington State, U. S. A., and southern British Columbia, Canada. It is readily distinguished from other eastern Pacific Pandalopsis by a number of characters including an unusually large number of carpus articulations of the second pereopod and a relatively short outer antennular flagellum and rostrum. Juveniles often associate with the sea urchin Strongylocentrotus franciscanus, while adults reside in deep crevices and under boulders. Like many other species in the genus, it appears to be a protandric hermaphrodite.