444 KAMAKICHI KlSHmOUYE : 



greyish and tinged with yellow, while the anal is white with the yellow tip. 

 Anal finlets ai'e greyish witli yellowish margin. Iq young specimens under 

 7.5 kg in weight, the sides are greyish with a few colourless hnes and series 

 of colourless dots, nmning transversely. 



The flesh is pinkish in colour, rather soft, especially in yoimg individuals. 

 Thus tliis species is considered a httle inferior to the cormnon tunny. 



Very voracioua fish, feeding on sarnies, bonitos, luminous fishes, such as 

 3Iaurdicm, and allied kinds, cuttle-fish, and Aauphipoda, Sergeäes, .Acan- 

 t/iepJiyra, etc. 



This species lives in a deep layer of water, ca. 20-120 m below the 

 surface, 13-25° C in temperature, in offshore waters. Nortliern limit of 

 distribution is ca. 36° N. Caught at the southern coast of oiu- coimtry and 

 also at the Ogasavvava Island?, Ryiikyu Islands, and Taiwan. Not yet known 

 fi'om the Japan Sea. In 1920 I observed a similar or the same species at 

 the market of San Pedro, but as I did not examine the anatomy in detail, I 

 can not tell exactly to which species it belongs. The broad body, the form of the 

 liver, hepatic venules, etc. were nearly the same as the Japanese species. Japanese 

 üshermen say that this species occurs in Hawaiian waters too. Prolably widely 

 distributed in the deeper layer of the subti-opical region of the Pacific Ocean. 



At night the fish seems to come near the siu-face, as do other species of 

 timnies, and on moon-light nights catches are generally good. 



The fish gi'ows to a total length of ca 2 m with a weight of ca 86 kg. 

 Fish of ca 70 cm is the smallest fish caught. I found skeletons of small 

 examples, ca 30 cm in length in the stomach of a NeoHmmms Jiuicropierus, 

 ciiught near the Ogasawara Islands in January 1919. 



HiKOKATA YASfflRO (78) is probablj' the fii-st author who has written 

 about this species, distinguishing it from the other species by the larger ej-es. 

 Well known aitthors aftor him mention this sj^ecies in theii* list of fishes. Thits 

 tliis species seems to have been caught in our country frijm about the liogiu- 

 ning of the nineteenth century. 



Though this species has many distinctive charactei-s, it is rather difficult 

 to identify it, especially when there is no other species to comimi'e with. 

 Sometimes we receive reports that tliis species has been caught in poimd-nets ; 

 but we are inchue<l to doubt the acciuracy of the reports, as it is, so fai* as we 



