DISTRIBUTION OF SPECIES 



271 



of note. Only adults will be considered, since outstanding taxonomic problems regarding the juvenile 

 stages make a complete analysis of these stages impossible at present. The data only refer to the time 

 and conditions when the samples were taken. 



Table 2 shows the total numbers of adults of each species captured at each station. The first striking 

 feature is the large number of species of Halocyprids present in such a limited area. The second is the 

 vast preponderance of Conchoecia elegans. Muller (1927), Elofson (1941) and others pointed out the 

 cosmopolitan nature of this species, so that its presence is not surprising, but its large numbers will 



Table 2. The sounding and total numbers of adults of each species captured at each station 



* Soundings not at actual station but nearby. 



f Omitting duplicate samples and those in which the net failed to operate correctly. 



require explanation when further data become available. C. carta, C. nasotuberculata and C. tereti- 

 valvata were also present in large numbers. Though C. alata was less numerous, it occurred in 

 sufficient numbers to form an appreciable proportion of the material, particularly in samples between 

 250 and 750 m. Other species were much less numerous, but some occurring in total numbers of 

 from sixteen to twenty-five were sufficiently evenly distributed to be considered typical of the particular 

 series of samples. In the case of C. bispinosa, although a total of twenty-eight adults was found in the 

 samples, nineteen of these were from 500-250 m. and 750-500 m. samples from Station WS 976. 

 It would seem that when the samples were taken at this daylight station there may have been a 

 localized swarm of this species. \ 



As has been pointed out above, C. echinata has now been found south of its previously recorded 

 range of distribution and C. obtusata antarctica north of its previously recorded range. C. teretivalvata, 



