VI 



The plates, as in the preceding Volumes, have been prepared by the aid 

 of the autographic process, and great care has been applied to make them 

 as instructive as possible. I especially have been anxious to give good and 

 easily recognizable habitus-figures, not only of selected female specimens of each 

 species, but also of the respective adult males, which, as is well known, in most 

 cases are very rarely met with, and, owing to their very conspicuous difference 

 from the females, have given occasion to much confusion in the systematization. 



As the literature referring to the Cumacea is far less extensive than 

 that of other Crustacean groups, it has been possible for me to give a rather 

 complete list of publications arranged alphabetically according to the names of 

 the authors. In the greater number of these publications, however, only slight 

 notes on Cumacea are found. The more essential works are marked with 

 an asterisk. 



Finally, I beg once more to offer my best thanks to the direction of the 

 Bergen Museum, by whose assistance I have been enabled thus far to prosecute 

 this great work, and which will, I hope, still assist me in continuing the work 

 with several successive Volumes. 



G. 0. Sars. 



