COMPARATIVE STUDY OF SCOMBROID FKHES. 4(33 



lj<j(Jy Uioiv or k'ss coiupiesscd, its lieigLt is uearly uijuul txj the loufjtL of 

 the head. Middle limb of the corselet ends a little Ixjbind the pectoral, and 

 one or two rows of minute scales are foui;d on »,'ither side of the lateral line. 



The hjpaxial dark red portion of tlie lateral muscle is larger than the 

 epaxial. Myoton es of some body-segirents seem to be subdivided in the dark 

 red portion. 



Long intermuscular bones, the tips of which are found to reach the surface 

 of the body to the 11th vertebra, and the last four of them are not entirely 

 ossified, leaving the middle part fibrous. Tiie lateral process of the second 

 vertebra is longer than the vertebra iteelf. The haemal arch of the firet 

 caudal vei"tebra is bent with a more or less obtuse angle. In the 23rd and 

 some succeeding veitebrae there are paired downward processes from the end 

 of the haemal process, and these processes nearly reach the origin of the haemal 

 spine of the preceding vertebrae. 



This species is very widely distributed. Its northern range reaches to Hok- 

 kaido and is known fiom the coasts of the Japan Sea, Korea, Ogasawaro Is- 

 lands, Kyukyu Islands, Formosa, etc. Caught in large numbers in soutliem 

 regions. 



This species grows to a weight of ca. 1.5 kg. 



Seems to spawn in smnmor. Iteproductive elements are nearly ripe in 

 August. 



This species is not so numerous as the other but the flesh being firmer 

 is superior to the ether iu quahty. 



Auxis maru Kisliinouye. 

 Marumedika, chilx)h, daiuanpo, magatsuwo, manba, mandara, marugatsiiwo, 

 nodogiuro, rohsoku, subota, uzuwa, etc. 



Figs. 2, 15, 27, 56, 60. 



? Auxii tapeinosoma, Bleeker, Verb. Bat. Gen. XXVI, 98, Tnb. 7, Fig. 1, 1854-57. 



? Scomba- ihaiard, lÄJepede, Hist. Xat. Poiss. in, 9, 1802. 



Amis rorhei, Kitaharn, .Journ. Fish. Bur. VI, 3, PI. 4, Fig. !), 1897. 



Awlv mar», lushinouye, Sui. Gnk Ho, I, 24, PI. 1, Fig, 19, 1915. 



D. 9-10, 11-12, 8. A. 13, 7. Gül-rakers 10 + 36. 



Body fusiform, nearly rounded in cross-section, and its height is smaller 



