COMPARATIVE STUDY OF SCOMBROID FISHES. 
463 
Body more or less compressed, its lieigLt is nearly equal to tlie length of 
the head. Middle limb of the corselet ends a little behind the pectoral, and 
one or two rows of minute scales are found on either side of the lateral line. 
The hypaxial dark red portion of the lateral muscle is larger than the 
epaxial. Myoton.es of some body-segments 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. The lateral process of the second 
vertebra is longer than the vertebra itself. The haemal arch of the first 
caudal vertebra is bent with a more or less obtuse angle. In the 23rd and 
some succeeding vertebrae 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 from the coasts of the Japan Sea, Korea, Ogasawara Is¬ 
lands, Ryukyu Islands, Formosa, etc. Caught in large numbers in southern 
regions. 
This species grows to a weight of ca. 1.5 kg. 
Seems to spawn in summer. Reproductive elements are nearly ripe in 
August. 
This species is not so numerous as the other but the flesh being firmer 
is superior to the other in quality. 
Auxis mar a Kishinouye. 
Marumedika, chiboh, dainanpo, magatsuwo, manba, mandara, marugatsuwo, 
nodoguro, rohsoku, subota, uzuwa, etc. 
Figs. 2, 15, 27, 56, 60. 
? Auxis tapeinosoma, Bleeker, Verb. Bat. Gen. XXVI, 98, Tab. 7, Fig. 1, 1854-57. 
? Scomber thazard, Lacépède, Hist. Nat. Poiss. IH, 9, 1802. 
Auxis rochei, Kitabara, Journ. Fisb. Bur. VI, 3, PI. 4, Fig. 9, 1897. 
Auxis maru, Kisbinouye, Sui. Gak Ho, I, 24, PI. 1, Fig, 19, 1915. 
D. 9-10, 11-12, 8. A. 13, 7. Gill-rakers 10 + 36. 
Body fusiform, nearly rounded in cross-section, and its height is smaller 
