anything and crowded densely in number, wrdle in tha southern, 



they are mainly associated vfith hirds or are s.ttaoh3d to bauks 

 and crowded thinlyo The leading shoals varies froa nortnarn 

 to southern sea-districts in succession froni those associated 

 •with sharks, to what not, those associatid with -vvhales, birds 

 or drifting tirabsrs and to those attached to banks o 



(end of Siiglish syiiopsis) 



In the investigation of the fishing situation of migratory 

 fishes like the skipjack and tunaj all sorts of basic studies 

 ■iTith rsgar4 to the ecology of the schools are thought to be 

 essentialV „ Ihe present paper represents the results of a 

 small investigation based on the latest data concerning the 

 composition of skipjack schools » The data are taken from the 

 reports of the fisheries axp 3 r indent stations of the various 

 prefectures and metropolitan districts wliich participated in 

 the Cooperative Skipjack Fishery'" Investigations for 1533 

 (TaihokUj Okinawa, Kianainoto, Ksgoshinia, Wakayaiiaj iita, A^chi, 

 Kanagawa, Tokyo, Ibaragij Fvikushiraa, M5.yagij and Iwat£}£/o 



Large, medium , and small fisho K&re fish irrlth a body 

 weight greater than E~Tb&o are' called large, those bs'tween 

 k and 8 lbs 9 are called medium, and these under k IbSo are 

 called small „ The sea areas are divided into the Eokkai- 

 Saiiriku Sea Area (north of a line drawn 3E from Mcjiraazaki), 

 Zunan Sea Area (east of a line dra'-jsn due south from. Onaasaki, 

 and extending to the limits of the Kokkai-Sanriku Sea Area), 

 the Nankaido Sea Area (east of a line drawn due south from 

 Hisaki to the limits of the Zunan Area), and the Satsunan Sea 

 Area (east of a line joining Nomasaki and Fukikaku to the 

 liiTiits of the Nankaido Sea Arsa}o 



Table 1 shows the numbers and percentages cf skipjack of 

 each size taken, in each area and in aach month, and from it the 

 following can be stated? (1) In the Hokkai-Sanrik-u Sea Area 

 the munber of medium skipjack taken (85 percent of the whole) 

 and the number of their appearances (75 percent of the whole) 

 are over#ielrcingiy predominant, and they make up the most 

 important element in the composition of the dchools in tiiis area. 



2/' 



2/ 



K, Kishincijyes Contributions to the comparative study of 

 the so-called scombroid fisheso Jo-jto Cello AgriOo 1115)0 

 UniVo Tokj'-o, 8(3)j ppo 25'3=ii75 is a valuable contribution 

 in this fieldo 



The detailed data have been omitted from this paper. 

 Cons-alt the reports of operations by the agencies concerned 

 for the year l?33o 



