1908]  Setchell & Collins,— Algae from Hudson Bay 115 
no reports of algae having been collected in this bay so far as is known 
to the writers, and one seeking for information as to the characteristics 
of the marine flora of this vast expanse, situated as it is, near to the 
North Atlantic on the one side, yet not entirely separated from the 
western portion of the American Arctic Ocean on the other, searches 
in vain. Some years ago, Professor D. C. Eaton, of Yale University, 
received from George Comer, of the Bark Canton, a few specimens 
which had been cast ashore on Depot Island in lat. 63? 55' N. and 
long. 90? 20’ W. and gave them to one of us (W. A. S.) to be disposed 
of as might seem best. The other of us (F. S. C.) received from 
Professor John Macoun, a decidedly more extensive collection made 
by William Spreadborough for the herbarium of the Canadian Geo- 
logical Survey, on the western shores of James Bay, somewhere 
between Cape Henrietta Maria and Moose Factory, and conse- 
quently between lat. 51? and 55? N. and about long. 82? W. 
Although the number of species in the combined collections is not 
large and does not contain any specimens of particular interest, yet it 
seems best to the writers to put on record the species in a simple list, 
in the interest of promoting a knowledge of the distribution of our 
American forms. | 
In all we have 28 species and varieties to record and practically 
all are well known and circumpolar in their distribution, as may be 
seen by reference to Kjellman’s “Algae of the Arctic Sea.” "Тһе only 
real exceptions to circumpolar distribution are probably Agarum 
Turneri and Delesseria denticulata var. rostrata. The former quite 
certainly does not occur on the coasts of Northern Europe nor in the 
Siberian Sea. The latter, up to this time, has been supposed to be 
restricted to Baffin Bay. Harveyella mirabilis and Actinococcus 
subcutaneus are inconspicuous and parasitic species, not very well 
known as yet, and may probably be found to be circumpolar when our 
knowledge has been made reasonably complete. Postels and Ruprecht 
have figured a parasite (?) on Rhodomela floccosa from the North 
Pacific Ocean which may be Harveyella, and it is reported from 
Southern California. Euthora cristata is reported from the northern 
Pacific Ocean, but its place seems to be largely taken by the related 
species E. fruticulosa. Enteromorpha crinita is not to be regarded as 
yet as a strictly circumpolar species, but it occurs in the various 
temperate seas in both Atlantic and Pacific Oceans. 
