Published online by Cambridge University Press: 11 May 2009
INTRODUCTION
During the last 25 years I have collected opisthobranchs from more than 1200 stations (dredgings, collecting by divers, visits on the tides etc.) all around the Northern Atlantic, and among them close to 200 from the British Isles, viz. during two short visits to Plymouth, two somewhat longer ones to Menai Straits, one to Millport in Scotland, and three to Carna in W. Eire. In all those places, the respective marine stations, leaders and personnel, have been of the utmost help and assistance, and I hereby express my warmest appreciation for the kind way in which I have been received. Without that strong support I should never have been able to accomplish the task of comparing live specimens of opisthobranchs from all around the Northern Atlantic in order to tackle all the taxonomic problems involved. The present paper on the genus Doto is my first separate contribution to a revision of the British nudibranchs. The material obtained is kept in the Zoological Museum of the University of Copenhagen.