PREFACE. 



Professor Georg Ossian Sars died after some weeks of ill-health on 

 April 9, 1927; on the 20th of the same month he would have filled his 

 ninetieth year. Among his papers were found the manuscript and the drawings 

 to Parts XV and XVI, which were intended to form the conclusion of 

 Volume IX, Ostracoda. Professor Sars had also written the 'Systematic List' 

 and the 'List of Plates' of this volume. 



The proofs of Parts XV & XVI have been read by Mr. Sigurd Johnsen 

 (Zool. Dept., Bergen Museum), who has also prepared the Alphabetical Index 

 to Vol. IX. Mr. Johnsen wants to remark that in a few cases the names as 

 written in the manuscript of Syst. List differ from those used previously in the 

 text; in 'List of Corrections' these cases are noted together with some misprints 

 which were observed when preparing the index. . 



During his long and industrious life Professor Sars worked in many 

 branches of marine zoology (Whales, Fishes, Mollusks etc.) and^everywhere 

 with singular success; in later years his special studies centred in the vast 

 field of the Crustacea. The first parts of "An Account of the Crustacea of 

 Norway" were published in 1890. Though Sars did not reach to complete 

 this work, the nine volumes published, comprising abt. 2400 pages of text and 

 more than 1100 plates, will always remain a standard source of knowledge to 

 all students of this group and a monument to the genius of G. O. Sars. The 

 Board of Directors of the Bergen Museum is proud of having been the medium 

 of presenting this work to the scientific world. 



Bergen, January, 1928. 



