Canada 



Geological Survey 



Victoria Memorial Museum 



BULLETIN No. 1 



XVI. — Hydroids from Nova Scotia. 

 By C. McLean Fraser. 



The material for this report was collected in distant locali- 

 ties, at times some distance apart. Much of it was collected 

 by the writer in the neighbourhood of Canso, the extreme 

 eastern point of the mainland, in the summer of 1902, when 

 the Marine Biological Laboratory was located temporarily 

 at that place; the remainder was collected by Mr. John Macoun, 

 in the neighbourhood of Barrington Passage at the extreme 

 southern end of the peninsula, in the summer of 1910. 



At Canso, the numerous old wharves and piles afford good 

 collecting ground within the harbour. There are numerous 

 islands in the vicinity, but as their shore line consists usually 

 of hard smooth granite, comparatively few species are to be 

 found. In Chedabucto bay, by dredging in from 20 to 50 

 fathoms of water many fine specimens were found, but the 

 bottom is so rough and rocky that dredging is rather a slow 

 process, and conditions are very similar near by in the open 

 Atlantic. A good opportunity was afforded for getting some 

 fine specimens from the Codbanks. Cod fishing was carried 

 on in about 45 to 50 fathoms with the trawl lines. Very often 

 the trawl hooks brought stalked ascidians or pieces of rock 

 to which were attached specimens of hydroids. Taking 

 everything into consideration, therefore, the conditions gave 

 variety enough to obtain some interesting specimens. 



At Barrington Passage, the specimens were obtained from 

 shallow water to a depth of 5 fathoms. 



