BIOLOGY OF THE ATLANTIC MACKEREL 



235 



Table 20. — Record of mackerel larvae caught on cruises VIII and IX — Continued 

 CEOISE IX, JULY 16-24, 1932 



Note.— In addition to the above, hauls which yielded no mackerel material were made during cruise VIII at New York IV 

 on June 29, Montauk I, II, and III on June 30, and Martha's Vineyard III and IV on July 1; and during cruise IX at Montauk 



II and IV and Shinnecock II and III on July 17, at New York I, III, and IV on July 18, at New York V and Martha's Vineyard 



III and IV on July 19, at Nantucket Shoals I, II, and III on July 20, at South Channel II and Western Georges I and II on 

 July 21, at South Channel I, Chatham I, Nanset I, Kace Point I and Boston Light I on July 22, at Cape Anne I, Newhuryport I, 

 Boone Island I, and Cape Elizabeth I and II on July 23, at Boone Island II, Cape Anne III, and Race Point II on July 24, 1932. 



p ; SIZES OF YOUNGEST POST-PLANKTONIC MACKEREL 



To afford comparison between the largest tow-netted mackerel and smallest 

 sizes caught by other gear, there, are given in table 21 the length frequencies of several 

 samples selected for their pertinence to this subject. The measurements were taken 

 to the nearest half centimeter on a straight line from the snout to the fork of the tail. 



Table 21. — Sizes of young mackerel in the earliest available samples of post-planktonic stages in 1926, 



1927, and 1982 

 [The sample of July 22, 1926, was taken by dip net in the boat basin at the Fisheries Biological Station at Woods Hole, Mass. 

 The other samples of 1926 and those of 1927 were taken by dip net in pound nets in the vicinity of Woods Hole, Mass.; and the 

 1932 sample came from the commercial catch of a pound net in the vicinity of Montauk, N. YJ 



525293- 



