Revision of Pylopagurus and Tomopagurus (Crustacea : Decapoda : Paguridae), with descriptions of new genera and species. Part VI. Pylopagurus A Milne-Edwards & Bouvier, 1891, Haigia McLaughlin, 1981, and Pylopaguridium, a new genus

In this final part of a six-part series, two new species of Pylopagurus A. Milne-Edwards & Bouvier are described, P. macgeorgei and P. gorei, and one existing species, P. longicarpus Walton, is placed in synonymy with P. holm esi Schmitt. Some species of Pylopagurus have been found to exhibit weak de velopment of a male sexual tube, thus requiring emendation of the generic d iagnosis. A new monotypic genus, Pylopaguridium, is proposed for a new spec ies, P. markhami, in which males have asymmetrical coxae of the fifth pereo pods. The monotypic Pacific genus Haigia McLaughlin, is reviewed. An amende d key to all the genera of the "Pylopagurus-Tomopagurus" group, and a key t o the species now assigned to Pylopagurus are included. All species of Pylo pagurus, Pylopaguridium, and Haigia are diagnosed or described and illustra ted, and their morphological variations discussed.