I'.tS TAOE SK0G8BKRG 



t 'illy 111 tlu' cast" nf two sptvics bcknigiiig to tliis sul)-iiuiiily, ('iffiridiiia (Dolorid) 

 ptvltnata and Cifpndina ( Varguhi) uarvcgico liavo 1 had an opportunity oi investigating ,s[)t'tinu'iis 

 i-aptured at different periods of tlic xcar. 1 found that sexually mature females with embryos 

 in tlio brood rliamber and also larvaf in ditfcrent stages of these two genera appeared at all tin' 

 periods at which specimens were captund. It seems accordingly probable that these two 

 species do not have any definite more t)r less short j)airing period but that projiagation in 

 their cases takes place during the whol(> year. The same thing seems U) apply to the other 

 species belonging to this sub-family (as in all other Cy p r i d i n i f o r m s?) 



It is uncertain whi'tlu r ih(> fertilization takes place during a pairing flight similar to that 

 observed in the case of PhUomedes (Ph.) (jlubu.sa. All we know for certainty is that benthoic species 

 of this sub-family have also sometimes been observed in plankton; we find information — though 

 it is scanty — about this in the literature. 



The males seem, at least in some species, to survive for rather a long time after attaining 

 sexual maturity. There is, as we know, no reduction of the [masticatory limbs as in PhUo- 

 medes and SarsieUa. A species of this kind is Gy-pridina (Vargula) norvegica; the males 

 and females of this species were found equally numerous during all times of the year. — On 

 the other hand, in the samples of Cypridina (Doloria) pectinata investigated by me sexually 

 mature males were very rare. During the last larval stage this sex was, however, found to be 

 somewhat more numerous than the female sex (proportion — about 5 : 4). Do the males 

 die comparatively soon after the fertilization of the females in this species? 



Genus Gigantocypris G. W. Muller. 



Gigantocypris, a u t o r u m. 



Description: — Cf. G. W. MOller, 1895, p. 164. 



Shell: — More or less globular. With small but proportionately rather deep and 

 narrow rostral incisur; the bristles within the incisur variable. Posteriorly close to the hinge 

 the edges of the valves are separated, by means of which a small, somewhat rounded opening 

 is formed. The valves united along about 2/3 of the periphery. Tlie adductor weakly developed. 

 Balloon-shaped; walls very thin, presumably without lime incrustation. Very large forms. 



First antenna: — Long, slender, with 7 — 8 joints; for the proportion between 

 the joints see the species description below. The third joint relatively long. The sensory 

 bristle of the fifth joint has a moderate, somewhat varying, number of filaments, rather more 

 numerous in the males than in the females. On the bristles b and c one or more of the proximal 

 rami in. the male are modified for seizing the female. These rami, all of which are placed medially, 

 are all of about the same type, rather short and powerful, somewhat swollen proximally, 

 moderately chitinized distaU}', most often ending with a short hair; a httie proximally to half 



