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(invertebrate zoology)
An ostracod-like, free-swimming larval stage in the development of Cirripedia.



the final larval stage of development of cirripede crustaceans (barnacles). The cypris has a bivalve shell that covers the entire body; the shell resembles that of representatives of the subclass Ostracoda, particularly species of the genus Cypris. It has a median eye, two pairs of antennae, one pair of mandibles, two pairs of maxillae, and six pairs of thoracic legs. The abdomen is reduced. The cypris swims in the water and then descends to the bottom, attaching itself by the first pair of antennae to the substrate, where it is transformed into an adult. The antennae become reduced, and the shell fold is converted to a mantle, in which the skeletal plates characteristic of adult cirripedes are formed. In parasitic cirripedes the cypris undergoes regressive metamorphosis.

References in periodicals archive ?
Compaq and Unilever will work as a team to ensure that all geographies are rolled into this production system in the timescales provided by the business and application centers," said Karl-Heinz Cypris, director of global SAP alliance.
Brooklyn, NY 11207-9907 (718)342-4900 Carpenter Brothers Inc, Milwaukee, WI Gene Conreaux & Co, Indianapolis, IN Cyprus Metec Corp, P O Box 74 Fleming Pike, Winslow, NJ 08095 (609)561-7500 Cypris Minerals Co, 9100 E Mineral Circle, Englewood, CO 80155 (303)643-5000 Foseco Canada Inc, Guelph, Ont F&S Alloys & Minerals Corp, New York, NY Hickman-Williams & Co, 2015 Spring Road, Oak Brook, IL 60522 (708)574-2150 Miller and Co, 55 East Monroe St, Chicago, IL 60603 (312)372-1500 Molycorp Inc, Washington, PA Shieldalloy Metallurgical Corp, 3 West Blvd, Newfield, NJ 08344 (212)692-4200 Waterton Industrial Prod Co, Tempe, AZ Martin Zuckerman Co Inc, pikesville, MD
After hatching, the larvae go through a number of developmental stages culminating in cypris larvae (cyprids), which have to settle (attach) to a surface in order to complete the lifecycle.