COPEPODA. 
5 
3C 
1. Of the Antarctic Copepoda the following are new species and genera 
Paralabidocera hodgsoni Euchirella mcigna 
Haloptilus ocdlatus Faroella antarctica 
Stephos antarcticus Gaetanus antarcticus 
Euchceta similis Xanthocalanus antarcticus 
Calanus simillimus (mentioned briefly by Giesbrecht, loc. cit.). 
2. The following are species newly described by Dr. Giesbrecht (‘ Belgica ’ report), 
occurring also in the ‘ Discovery ’ collection :— 
Euchceta antarctica 
Stephus longipes 
Metridia gerlachei (nearly related to M. boecki and M. lucens). 
Oncea curvata ,, ,, 0. subtilis, Giesb. 
Rhincalanus grandis ,, ,, E. gigas, Brady. 
liar pact icus furcifer ,, „ H.flexus, Brady. 
3. Of species which occur in the North Polar regions there are only the following 
‘ Discovery ’ species, which bear such slight modification as to be practically identical : 
Microcalanus pusillus (= Pseudocalanus pygmseus); Oithona similis. 
4. The £ Discovery ’ collection would therefore lead us to suppose that, so far as 
copepod fauna is concerned, there is little resemblance between the characteristic fauna 
of both Polar regions. In the ‘ Belgica ’ collection, Oncea conifera and notopus ; and in 
the ‘ Gauss ’ collection, Oncea conifera, Gaidius tenuispinus and brevispinus, and 
Amallophora magna, that is, seven species of a total of 55-60 species occurring in the 
South Polar seas, are all that are identical with the species described by Prof. Sars as 
collected by Nansen’s Norwegian North Polar Expedition. It would not, however, be 
safe to take this list of Prof. Sars’ as the ultimate result of copepod research of the 
North Polar seas, and other species may yet be found to be identical. 
The following table shows the comparative relationship of species of the more 
frequently occurring genera :— 
N. Polar. 
S. Polar. 
Calanus finmarchicus 
replaced by 
C. propinquus 
„ hgperboreus 
,, ionsus 
„ simillimus 
„ acutus 
Metridia longa 
replaced by 
M. gerlachei 
„ princeps 
Amallophora magna (= Scapho- 
A. magna 
calanus acrocephalus , Sars) 
Scolecithrix brevicornis 
replaced by 
S. glacialis 
Xanthocalanus borealis 
replaced by 
X. magnus 
„ antarcticus 
