Results of the Hudson Bay Expedition, 1920 
I. The Foraminifera. 
By JosEpH A. CUSHMAN. 
The few bottom samples collected by Mr. Frits Johansen in Hudson Bay 
and James Bay, 1920, were sent to me to examine for foraminifera. While the 
number of species obtained is not large, they form a very interesting collection 
from the standpoint of distribution. No foraminifera have previously been 
known from this region. In all more than thirty species were obtained. These 
are mostly species which are characteristic of Arctic conditions. A comparison 
of these with the fauna known from other parts of the Arctic may be interesting. 
One of the most interesting things is the lack of certain species which are 
common elsewhere in the Arctic. Such, for example, is Hyperammina_ sub- 
nodosa, which is abundant in the Canadian Arctic Expedition collection, 1913-18, 
and also north of Newfoundland. It may be noted, however, that Kiaer did 
not record this species in his paper on the American Arctic. Other species 
which were abundant in the Canadian Arctic collection are missing in the Hudson 
Bay collection or are replaced by other species. 
A comparison of the Hudson Bay collection with the fauna recorded by 
Brady from off Nova Zembla, and by Parker and Jones from Baffins Bay and 
Davis Strait shows that these faunas are both very similar. It is evident, from 
a comparison of these faunas, that the foraminifera of Hudson Bay are more 
closely allied to regions to the east than to the regions to the west of this longitude. 
It is also very evident from a study of both of these collections that there are 
developed in the Arctic regions very definite species, which are distinct from the 
warmer water forms often assigned to the same species. 
STATIONS FROM WHICH MATERIAL WAS EXAMINED WITH SPECIES OF FORAMINI- 
FERA AT EACH STATION. 
(1) Bay at (N. of) S.E. point of South Twin Island, James Bay, 4-5 fathoms. 
Sand, gravel, and stones. July 27, 1920. 
Trochammina rotaliformis, Vernewilina advena, Discorbis wrighti, Poly- 
stomella striato-punctata, var. incerta, Quinqueloculina seminulum. 
(2) Bay on south side of Grey Goose Island, east side of James Bay (lat. 
54°N.), 10 fathoms. Sandy mud and algae. July 30, 31, 1920. 
Ammobaculites cassis, Trochammina rotaliformis, Patellina corrugata, 
Pulvinulina frigida, Potystomella striato-punctata, var. incerta, Quinque- 
loculina seminulum, Quinqueloculina subrotunda. 
(3) Richmond Gulf (about 3 miles from entrance), east coast of Hudson 
Bay, 15-20 fathoms. Stones, sand, and Delesseria-algae. August 23, 1920. 
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