Introduction

This paper is the sequel to my paper of 1959 which dealt with the Onychiuridae of the late Dr R. S. Bagnall's collections of microscope slides of Collembola in the British Museum (Natural History), London.

Examination of Bagnall's type specimens of the Tullbergiinae has led me to extensive revision of some of his species. This is set out in the following pages and figures drawn from his material, and completes the revision commenced in my 1959 paper. The same criticisms apply to Bagnall's work on the Tullbergiinae as I recorded in the introduction to my 1959 paper.

I would like to record once again my thanks to Dr T. Clay and the Director of the British Museum, National History) for their assistance with material and the many concessions extended to me over the exceptionally long period of this study.