In this Special Issue, we address the state of the art of the systematics of the main annelid groups and the improvements in the diversity they hold, with speci

Annelids (the segmented worms) exist in a remarkably diverse range of mostly marine but also freshwater and terrestrial habitats, varying greatly in size and fo

This reference work is designed to provide background information on an array of northeastern Pacific marine invertebrate species so that they can be more easil