Few species of fishes have greater, amounts of landings here in Japan than the flying squid, Ommastrephes sloani pacificus, as they are fished almost in all the coastal wa ?? crs throughout the year. In the area neighboring to the Oki Islands on the sea of Japan, the majority of the catch are produced by fixed netting in colder seasons of the year.
On the basis of these facts an attempt has been made to explain statistically the relationship between fluctuation in the catch and meteorological factors such as the low pressure, discontinuity, wind and the atmospheric temperature. The period under study covers every fixed netting season from October 1950 to March 1954.
1) The hauling seems to decrease for a day or two after the low pressure most closely-approached to the fixed netting grounds. Whereas no significa ?? difference in the effect of the low pressure on the catch is evident for either the days imm ?? diatcly before or on the third day after the encounter of low presure (Table 1).
2) On a morning followed the windy night blowing harder than 7 in Beaufort's scale, the catch would be affected almost with no regard to the direction of the wi ?? d. When it had blown southeasterly or southwesterly, the haul in the next morning increased a little possibly because of a meteorological condition always preceding those blowing weathers (Table 3).
3) An increase in the catch followed the night when the atmospheric temperature had gone down more than 3°C (Table 5).
4) The approaching discontinuity can be said r ?? ponsible for bringing about a greater amount of the squid to be caught in the area under review. Because the favorable conditions for the netting such as the ES or SW wind, or changes in the temperature, are phenomena associated with the discontinuity passing over the area. However, it is necessary for a good haul to have the wind blowing at less than 5 mp ?? on the average (Table 2).

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