CAXADIAX FISHERIES EXPEDITIOX, lOl.'rlo 



443 



island bank. The deep water between Sable Island bank and Halifax seems to have 

 been free from it. It can only be considered to have been abundant at the two outer 

 stations (IG and 17), although the lack of uniformity in the hauls renders the point 

 uncertain. 



Fig. 6 shows its distribution during the second cruise of the Acadia. Owing to 

 the route of the second cruise being different from that of the first, a strict comparison 

 is difficult. 



Fig. (i.— Distribution of ^. scrratodcnlata, .Jnly-.\ugust l!tl5. Vertical lines indicate the boreal form with 

 zones showing ffequencies of 1 to 2o, 2d to 100 and lol to 300. Horizontal lines indicate the Gulf 

 Stream form with zones showing frequencies of 1 to 50 and 51 to 300. 



Several points are noteworthy: first, its presence in quantity in the deep water 

 between Sable Island bank and Halifax; second, its absence on Sable island bank at 

 station 59, where it was present on the first cruise (station 6); and third, its absence 

 at station 76 well out in deep water off the centre of the mouth of the Laurentian 

 channel. The sinuosities in the inner limit of its distribution are much the same in 

 the two cruises, except that they have been shifted toward the west in the second 

 cruise. The species does not seem to have pressed farther in to any appreciable extent 



