Introduction

The purpose of this bulletin is to illustrate one way in which information that has appeared in the literature since publication of my Keys (Wells, 1976) can be incorporated in them. Also, since the Keys were designed to be useful to non-specialists in harpacticoid taxonomy such bulletins (I hope to publish them at regular intervals) may serve to bring to the user's attention all the recent taxonomic literature. In this first bulletin I take the opportunity of correcting errors in the Keys. Some I have noticed myself but my attention has been drawn to others by several colleagues; to them I extend my grateful thanks. Hopefully few now remain but I would welcome notice of any that have as yet gone undetected.

In this bulletin the word codon is introduced as the term for the set of character states that characterize a taxon or group of taxa.