COPHEPODA. 
By G. Stewarpson Bravy, M.D., LL.D., D.Sc., F.RS. 
(Plates I-XV.) 
Tire material submitted to me for investigation was unsorted, and was contained in 
a series of tubes, the contents of which were collected in the Antarctic and Sub-A ntarctic 
areas between the dates of 21st June, 1912, and 2nd February, 1914. There was no 
dredged material, all the collections being tow-nettings, and some few of the tubes 
contained no recognisable copepoda. The number of species noted in this report is 
fifty-three, twenty-five of which appear to have been hitherto undescribed. Among 
these are six new genera, of which the descriptions I have been able to give are not 
always full enough to be quite satisfactory, owing to the paucity or poor condition of 
the specimens available. Several of the more prevalent Antarctic forms were previously 
known only from the descriptions of Dr. Giesbrecht in his report on the voyage of 
s.s “ Belgica.” These seem to be purely Antarctic species, while, on the other hand, 
a few seem to be almost cosmopolitan in distribution, as for instance Calanus propinquus, 
Rhincalanus gigas, and Microsetella atlantica, while one or two, such as Calanus 
finmarchicus and Oncaea conifera would appear to be more especially denizens of the 
far North and far South—Arctic and Antarctic—although the last-named species is 
likewise recorded by Giesbrecht in his work on the Neapolitan Copepoda. 
The new genera here described are :— 
Diarthropus. 
Streptocalanus. 
Huchaetopsis. 
Pseudodthrix. 
Plagiopus. 
Mawsonella. 
The new species are :— 
Calanus aculeatus. 
Diarthropus torticornis. 
Paracalanus Marie. 
Streptocalanus typicus. 
