care will be taken in preparing the plates, and as far as this is concerned, 

 the author begs to refer to the many special treatises published by him, in 

 which the above-mentioned method has been used. 



The 1st volume will comprise the order AmpMpoda, which, perhaps 

 most of all, is that in which the determination of species has been connected 

 with the greatest difficulties, and which therefore requires a thorough revision. 

 The numbers will appear at as short intervals as possible. As all the 

 plates are prepared in autography, and the expenses are thus quite indepedent 

 of the complication or number of the figures, all space will be used to the 

 best advantage. The habitus figures, which in nearly every case are from 

 living specimens, will thus be fully drawn, showing the mode of pigmentation 

 characteristic for each species (not as is usually the case only given in 

 outline), and there will also be given, on a greatly enlarged scale, detail figures 

 of the most characteristic parts. The author has especially thought it of 

 the greatest importance to give correct representations of the complicated 

 structure of the oral parts in the different genera, as the classification of 

 the Amphipoda ought chiefly to be based upon this character. In a limited 

 number of copies, the plates will be coloured, from the original drawings 

 by the author. 



G. O. Sars, 



Professor at the University of Ctiristiauia, Norway. 



The above mentioned work will be published by the undersigned. 

 The price for each number, 8 plates with (corresponding) 2 to 3 sheets of 

 letterpress description, in Starts' Dictimiary size, will, for subscribers, be Kr. 2.00 

 (2s. 2d.) -j- postage 1.5 0re pr. number. The subscription is binding for 

 vol. 1 (Amphipoda). 



This volume will contain about 30 numbers, and it will probably 

 be complete in the course of one or two years. A few copies with hand- 

 coloured plates may be obtained, but the price of such will be con- 

 siderably greater. 



The work can be ordered through any bookseller, or direct from the 

 publisher. 



Christiania, June 1890. 



Alb. Cammermeyer, 



Storthingsgade 4. 



