INTRODUCTION. 



Through the kinclness of Dr. O. Nordgaard, to whom I express my 

 sincere thanks, I have had the pleasure of examining a small, but most interesting- 

 collection of Medusae fomid by him on the coast of Norway, chiefly in the fjords 

 near Bergen. 



The collection consists of 19 species, about half of which are additions to 

 the fauna of Norway, four are described as new species'; and some perhaps have 

 been the means of increasing our knowledge of this interesting g-roup of animals. 

 The extent and contents of the collection will be readily seen from the following- 

 list of genera and species : 



