CHAPTER I. 



General terminology.' With a discussion of the general 



morphology of the limbs. 



With regard to several terminological questions connected with the Ostracods 

 there is still, unfortunately, considerable confusion and uncertainty in the literature. Because 

 of this some of these problems have liad to be subjected to a new treatment in the present 

 work. The most important of these is the general terminology of the limbs, a problem which 

 can scarcely be dealt with except in connection with a discussion of the general morphology 

 of these organs. In the case of others I have had to define my standpoint with regard to the 

 views of previous authors. 



Shell: — she/l 



With regard to the shell the terminology worked out by G. \\. MtlLLER has been 

 used in this work. — For the term ,,Saum" I have used ,,s e 1 v a g e", the word used by 

 G. H. Fowler, 1909 (see, for instance, p. 257). — When „s hell, seen from the side" appears 

 in the explanations of the drawings, this means that the figure is drawn from the whole shell; 

 when the word valve is used, the figure is drawn from a detached valve. 



Limbs: — '^''"*s- 



The names of the limbs: — \V. Giesbrecht, in his essay „Mittheilungen 

 iiberCopepode n", 1893, p. 102, after having first pointed out a number of inconsistencies 

 that previous writers had been guilty of in the terminology of certain limbs, utters the follow- 

 ing noteworthy words: ,,denn wenn die Namen der GliedmaBen auch urspriinglich nach 

 ihrer Function gewahlt sein mogen, so ist doch als Princip festzustellen, daB die homologeii 

 GliedmaBen mit gleichlautenden Nanien zu benennen sind, und man derselben GliedmaBe nicht 

 nach ihrer, zuweilen in derselben (Jrdnuug wechselnden Function verschiedene Namen bei- 

 legen darf." 



* The questions of thn special tfrminolotjy have been deall with in ronnertion with the prohleniK fo whirh tliey 

 are related. 



Zoolog. bidrag, Uppsala. Suppl.-Bii. I. 



