The Polychaetes Collected by the Canadian Arctic Expedition, 1913-18. 
By Rate V. CHAMBERLIN. 
Museum of Comparative Zoology, Cambridge, Mass. 
Polychetes were collected by the Canadian Arctic Expedition at various 
points along the North American Coast from southern Alaska northward and 
eastward to Bathurst inlet, Northwest Territories, by far the greater amount 
of material coming from the regions about Grantley harbour (port Clarence) 
and Collinson point, Alaska, and from Dolphin and Union strait and particularly 
Bernard harbour, Northwest Territories. Twenty-five species were represented 
in the material secured east of the mouth of the Mackenzie river and twenty-two 
from the region west of this point. By far the greater part of the material 
was taken along shore at small depths. A few forms are pelagic and a few 
were dredged from a depth of a hundred meters in Dolphin and Union strait. 
The pelagic forms include several spionid larve and one larval Paranaitts. 
es aie were collected by Mr. F. Johansen on the expedition from 1913 
to 1916. 
This report covers also some other annelid material from northern regions 
received for identification from the Canadian Geological Survey, this embracing 
collections made in Hudson bay and Hudson strait by the Neptune and Diana 
expeditions, a few forms from the eastern side of Hudson bay collected by 
A. P. Low, and several additional forms from British Columbia and Halifax. 
As was to be anticipated, the species represented are for the most part 
well-known and mostly widespread arctic and subarctic forms, the polychete 
fauna of the Arctic being one of the longest studied and best known in the 
world. All the species taken by the Arctic Expedition east of the Mackenzie 
river were forms previously well known from Greenland and other arctic locali- 
ties. West of the Mackenzie, where the rich Rering Sea fauna was approached 
or entered, the collections yielded seven previously undescribed species. In 
addition a new Nepthys is described from material taken by the Neptune in 
Hudson bay and a new Chone from that taken by the Diana in Hudson strait. 
Thus the report includes descriptions of nine new species from the total of 
forty-nine. The following lists indicate the forms secured at the several general 
localities. 
Anasptio boreus, n. sp. 
Terebellides stroemt Sars. 
Ampharete johansent, n. sp. 
Ampharete reducta, n. sp. 
BRiTIsH COLUMBIA. 
Halosydna lordit (Baird). 
Serpula vermicularis Linné. 
Port CLARENCE, ALASKA. 
OTHER ALASKAN LOCALITIES (MOSTLY 
SOUTH OF POINT Barrow.) 
Aphrodite sp. (Beaufort Sea, Sta. 29f.) 
Autolytus prismaticus (Fabricius). (Sta. 
: 6, 14, 17, 21, 57a.) 
Autolytus alexandri (Malmgren). (Sta. 
17). 
Harmothoe imbricata (Linné). 
Arctonoe lia, n. sp. 
Paranattis sp., larve. 
Psammate aphroditotdes (Fabricius). 
Sptonid, larva. 
Cistenides granulata (Linné). 
Cotiinson Point, ALASKA. 
Antinoe sarsi Kinberg. 
Ephesiella minuta (Webster and Bene- 
dict). 
Spio mimus, n. sp. 
Scolecolepides arctius, n. sp. 
71927—1} 
Spionid, larva Bb. (Martin point, 
Sta. 32c). 
Terebellides stroemi Sars. (Sta. 23). 
Samytha sexcirrata (Sars). (Sta. 23). 
Ampharete eupalea, n. sp. (Sta. 23). 
Circeis spirillum (Linné) (Prince Wil- 
liam sound, Sta. 60a). 
