COPEPODA. 
7 
typically Antarctic species ever find their way northwards by way of the deep Atlantic 
trough, but there is little evidence of it in the many collections made by the ‘ Gauss ’ 
throughout its Atlantic traverse. A certain number of species which are ubiquitous, 
such as Oithona similis, some species of Oncea, Haloptilus longicornis, Gaidius 
tenuispinus and major, and Gaetanus (armiger, and possibly caudani ), extend from the 
Faroe Channel to the southern ocean; but so far as the evidence at present goes, 
the Antarctic Copepod fauna is distinct from that of the Arctic seas, and the species 
which are typical of this region, and most numerous, do not extend far into the 
Southern Atlantic. As no observations have been made of the Copepod fauna of the 
deep water of the Indian Ocean, it is quite possible that Antarctic species may bear a 
considerable extension northwards in this direction. 
It is curious that no great number of Harpacticidse appear in the collections of the 
‘ Discovery,’ only three examples all told of Barpacticus furcifer, which is somewhat 
different from any Barpacticus of the northern hemisphere ; and only five are described 
from the ‘Belgica’ collection by Dr. Giesbrecht, two of which (B. brevicornis, B. chelifer), 
are identical with northern species. A fair number of species occur in the 4 Gauss ’ 
collection, but these have not yet been examined. 
The paucity in numbers of the Barpacticidse in the ‘ Discovery ’ captures is no 
doubt due to the mode of collection. 
II. 
List of Copepods in the ‘ Discovery ’ Collection. 
v "Euchceta antarclica. 
V „ similis. 
v Metridia gerlachei. 
„ princeps. 
V" Calanus acutus. 
V „ propinquus. 
„ tonsus. 
V „ simillimus. y 
Ctenocalanus vanus. 
Oithona similis. 
„ frigida. 
Oncea curvata. 
Microcalanus pusillus. 
Steplms longipes. 
is „ antarcticum. 
Xanthocalanus antarcticus. 
„ magnus. 
v Paralabiclocera hodgsoni. 
v Rhincalanus grandis 
Y Clausocalanus arcuicornis. 
Haloptilus ocellatus. 
Faroella antarctica. 
Gaetanus antarcticus. 
HeterorrhaMus longicornis. ^ 
Harpacticus furcifer. v 
CALANUS (Leach). 
The species first described by Brady as Calanus propinquus has been subsequently 
described by Giesbrecht, who now concludes (‘Belgica’ report, p. 16) that the copepod 
described by himself in 1892 as C. propinquus from the S.W. Atlantic, between 37° and 
52° S., is not this species, but one closely resembling it, to which he gives the name 
