The comparative external morphology and revised taxonomy of the British species ofIdotea

Abstract

This paper aims at describing the external morphology of seven British species ofIdoteafrom the functional and developmental aspects, thus revising earlier descriptions, such as those of Collinge (1917), which were based largely on adult specimens. Limitations of earlier descriptions are apparent, but some characters can be sifted from the older literature and combined with characters emphasized in this paper to give a schematic description of the seven species.