372 Dr. A. Ohlin on a 
obtained at Station 29 of the expedition of 1900, between 
East Greenland and Jan Mayen, lat. 72° 42! N., long. 14° 49! 
W.; depth 2000 m.; Globigerina-ooze; August 27, 1900. 
The specimen which was first recorded by Willemoes Suhm 
as a new species, and later on described by Sars, was taken off 
the Crozet Islands, lat. 46° 16'S., long. 48° 27’ E.; depth 
1600 fathoms ; diatom-ooze. 
In even the slightest details my examples agree so perfectly 
with Sars’s specimen, that I cannot hesitate for a moment to 
identify them. As the cases of bipolarity must be regarded 
as the most interesting points in marine zoogeography of 
the present day, I thought it appropriate at once to commu- 
nicate the present instance. 
In his paper On the Deep- and Shallow-water Marine 
Fauna of the Kerguelen Region of the Great Southern 
Ocean” * Sir John Murray enumerates nearly one hundred 
species belonging to different classes of animals which are 
supposed to be identical, and occurring both in the Arctic and 
Antarctic Oceans, but not in the tropical seas. 
In a critical revision of the forms quoted by Murray, 
Professor d’Arey W. ‘Thompson, in a paper “On a supposed 
Resemblance between the Marine Faunas of the Arctic and 
Antarctic Regions ”’ +, comes to the conclusion that in regard 
to more than one third of the species mentioned by Murray 
“‘ ovave doubt as to their identification was expressed by the 
original describers. . . . In somewhat more than another 
third the evidence of identity is inconclusive or even inad- 
misstble, = ; 
“ Of the remaining forms, about a dozen find their northern 
representatives in the Japanese seas, where they form part of 
a fauna predominantly southern in its relations. 
6c 
... the remnant of equal number that are quoted as 
occurring in the North Atlantic as well as in or near the 
Southern Ocean are, for the most part, deep-water species.” 
This remnant of the long original list of bipolar animals, 
as to the occurrence of which in both hemispheres no doubt 
can exist, comprises the following species :— 
? Harpacticus fulvus, Fischer (brackish). 
Terebellides Strémit, M. Sars. 
Janthina rotundata, Leach. 
Calanus finmarchicus, Gunnerus. 
* Trans. Roy. Soc. Edinb, xxxviii., 1895, 
+ Proc. Roy. Soe. Edinb. 1898, 
