116 THE OTTAWA NATURALIST. [ September 
stars ( Ophioglypa ), and numerous specimens of Sea Cucumbers 
( Psolus phantopus ) were dredged at Port Burwell. 
The Ceelenterates seen and examined embraced Hydrezoans, — 
Anemones and Ctenophores. The Hydrozoans and Ctenophores _ 
(which on this occasion may be considered together) of the north- 
ern seas are of exquisite shape andcolouring. They are extremely 
delicate organisms, yet so constructed as to live and thrive in the 
sea. Once removed from that element, however, their fragility 
defies any way of well preserving them as specimens. Some were 
of mushroom or umbrella shape; others like bells, and were of the 
most beautiful blues and pinks, or of opaline or soft yellowish 
colour. Others again were transparent and colourless, and ap- 
peared like water bubbles. 
In size the Medusoid kinds range from over a foot across the 
disc to that of less than a small thimble, and I had frequent occa- 
sion to examine the smaller ones close at hand, by scooping them 
up with a small net and placing them alive in a glass vessel con- 
taining sea-water. 
Medusoids were observed at Black Tickle, Labrador; at Port 
Burwell, Ungava ; at Cumberland Sound, Baffin Land; at Fuller- 
ton, Keewatin; and at Chesterfield Inlet. I saw some large ones 
at Port Burwell, one of which was more than a foot across the 
‘disc. In colour those were magenta with transparent borders. 
The phosphorescence of the sea in the Hudson Bay is not 
such an imposing spectacle as I have seen that phenomenon in 
the Behring Sea; nevertheless, where the Ccelenterates were 
numerous, on dark nights, the sea appeared at places near by as 
if beset with twinkling stars. Doubtless, small crustaceans, 
notably amphipods, also contributed to this phenomenon. I ex- 
perimented with some of the ctenophore ccelenterates, by placing 
them in glass vessels containing salt water, in the dark in my 
cabin, and discovered the luminosity to proceed from the vibratile 
cilia which are located, in eight rows, at regular intervals adown 
the sides. 
The Ctenophores were particularly fragile, so that it was im- 
possible indefinitely to preserve any specimens. This very fra- 
gility, however, led to observations which may prove to be of 
some consequence. On removing them from the scoop-net and 
