studies on marine Ostracods 



vm 



(^ P. T. Clf:ve and 0. Pettehsson, 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 Th. Scott, 1912 a, are included in this list. 



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

 l)\- 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 

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

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

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

 were justified refer to finds from regions from which C. elegam 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 Dijlerence between 



, . . , . . ■ iii-i--j_T Arclic and Antarcli 



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

 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. MUller for the two other Scandinavian H a 1 o c y p r i d s, 

 Conchoec-ia obtusata and C. horealis). 



The following facts may be pointed out with regard to the proportit)ns between males Pro/wnion between 



, the scjccs 



and females: G. H. FoWLER, 1909, observed the following proportions: 



Larvae in Stage I 

 94 



88 



Larvae in Stage II 

 84 

 106 



Mature specimens 

 S 61 



$ 123 



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

 males. „Af de talrige PLxemjilarer 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: 



r2th August, 1901: 



Mature specimens 



Larvae in Stage I 



Larvae in Stage II 



2 



24 

 1(1 



Sample 

 I 



1st— 7th February, 1911: 

 0^ 12 

 2 13 



Sample 



33 

 26 



Sample 

 II 



9 

 6 



Sample 

 II 



o 

 31 



11 



98 



Sample Sample 

 III IV 



7 

 9 



Sample 

 I 



19 

 20 



Sample 

 I 



6 



Sample 

 II 



33 

 31 



Sample 

 III 



56 

 45 



Sample 

 IV 



16 



6 



Sample 

 III 



39 



9 



Sample 

 IV 



A\'e 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 



Z00I03. Viidrag, Uppsala. Suppl.-Bd. I. 



