CONTENTS. 



Page. 



Introduction i 



The new species brought back by the Expedition 2 



Systematic account of the lichens and List of the localities 19 



The localities of the Expedition 4 1 



List of the subantarctic south-american lichens 47 



List of the antarctic (and south georgian) lichens 56 



Some geographical considerations 61 



The distribution of the lichen-genera in the subantarctic and antarctic regions ... 67 



Addition and alteration 69 



Bibliography 7° 



Explanation of Plates 73 



Plates 1 — 3. 



