Structure of Integumental Perforations in the Euchirella Messinensis Female (Crustacea, Copepoda, Calanoida)

An inventory has been made of the various integumental organs found in the female of Euchirella messinensis (Claus, 1863). The structure of the rigid parts of each type of organ is described and possible functions are discussed with reference to similar structures reported from other Crustacea. A definition of the term "integumental organs" is included.