studies on marine Ostracods (533 



(= P. T. Cu:\E and 0. Pettersson, 1903; cf. p. 634 below). It seems to me exceedingly pro- 

 bable that G. W. MOller's identifications are correct. On the other hand it is only with a certain 

 amount of hesitation that G. S. BRADY, 1907 and Tli. ScOTT, 1912 a,, are included in this list. 



All the other names included in the list of synonyms given above are accompanied 

 by descriptions or verificatory figures. Most of these descriptions and figures are not, however, 

 so detailed and certain that they exclude the possibility of a confusion having taken place between 

 tnis species and C. discophora G. W. MCller ; a confusion of this kind even seems not improbable 

 in the case of V. Vavra, 1906. All the same it seemed to me as a preliminary best to include 

 all these names as synonyms; none of tlie narnes about which it may turn out that the doubts 

 were justified refer to finds from regions from which C. elegans is not known with full certainty; 

 this of course makes a possible mistake comparatively insignificant. 



The only difference that I succeeded in finding between Scandinavian and Antarctic Difference beiueen 

 specimens of this species after a very careful comparative examination was that which is pointed 



c L J L^ I specimens. 



out on p. 625 above with regard to the posterior dorsal corner of the right valve in male specimens. 

 The difference seems to me too slight to justify us in establishing an Antarctic variety (as was 

 previously done by G. W. MCller for the two other Scandinavian H aloe y p r i d s, 

 Conchoecia obtusata and C. horealis). 



The following facts may be pointed out with regard to the proportions between males Proportion between 

 and females: G. H. Fo\\li:r, 1909, observed the following proportions: * *"^" 



Matiu'e specimens Larvae in Stage I Larvae in Stage II 



(J 61 94 84 



$ 123 88 106 



G. 0. Sars points out (1865, p. 118) that he found a far greater number of females than 

 males. ,,Af de talrige P]xemplarer af naervaerende Art, som jeg har indsamlet, var den langt 

 overveiende Del Hunner." (Of the numerous specimens of the present species collected by me 

 the vast majority were females.) 



An investigation that I made of the Swedish H y d r o g r a p h i c ■ Biolo- 

 gical Commission's material from Skager Rak showed the following results: 



12th August, 1901: Mature specimens Larvae in Stage I Larvae in Stage II 



1st— 7 th February, 1911 



We thus see that the proportions between males and females in the samples investigated 

 by me were very varied. In the first larval stage males and females were found in about the 



Zoolo;. bidrni. Uppsala. Suppl.-Bd. I. ^" 



