OOMPAU.VTnT. STl'DY OF SCOMBR(iro FLSHKS. 437 



c»nued flesh is much esteeiued as " tuna " iu tlie Uuited States of America. 



G«rmou feeds on pelagic plankton, crustaceans, and small fish. I found a 

 yoimg germon about 30 cm in length in the stomach of a large germon, 

 caught on Jauuan- 20th, 1917 near tlie Ogasawara Islands, and other small 

 ones from a ^-ellow filmed tunny and a spear-fisli, caught on February' 27th of 

 the same j-ear. Such small individuals are not caught nor foimd near tlie 

 coast of the main island. 



I cannot tell at pi^sent whether the germon of the Atlantic and the 

 Meditenanean is the same as the Pacific germou. Specimens of the germon 

 and the common tunny of the Mediterranean were sent to me firom the 

 Zoological Station at Naples in 1914 on a German steamer; but imfortunately 

 the steamer was sei:zed in the Bed Sea and these specimens did not reach 

 me. Many authors seem to have confounded tliis species with other sjjecies of 

 tunnies with long jxjctorals. 



Thunnus orientalis (SclJegel). 



Kmisliilji, gotolisliibi, magiu'o, medi (immatiu-e). 



Figs. 3, 21, 43, 44, 50. 



T/iynnus orieittalb, Schlegel, Fauna Jajxin. Poiss. 94, 1802. 



Orcymts schleijelii, Steiudachner A Doderlein, Fisch. Japon. Ill, 11, Taf. 3, Fig. 1. 1885. 



Orcynus thynmis, Kitahaia, Journ. Fish. Bur. VI, 1, PI. 1 Fig. 1, 1897. 



Tfiunnus scldegeU, Fujita. Otaki & Higiuashi, Fish. Japan, I, 21, PL 1905. 



Thunmis orienldlis, lushinouye, Siii. Gak. Ho. I, 17, PI, 1, Fig. 9, 1915. 



D. 13-15, 14, 8-9. A. 13-15, 7-8. GiU-iakers 12-13 + 24-26. Scales 230. 



Body plump, broad, and the caudsil ix)itiou sharply tapering. Pectorals 

 short, scarcely reaching the origin of the second doraal, and tajjeriug gradually 

 towai-ds the posterior end. The height of the second doi-sal is longer tlian 

 that of the first, nearly equal to tliat of the anal ; but shorter than tliat of the 

 I)ectoraLs. Tlie latei-al line has a sharp and jieculiai' bend over the pectorals, 

 l)eiug lient suddeulj- upward and anteriorly alxsve the origin of the fins, 

 and then Ijent giadually dowuwai-ds and backwai'd again. Schlegel writes that 

 the eyes of this sj^jecies seem to te larger than those of the common European 

 tunny. In one year old fish, the eyes are larger, being contained ca 6 times 

 in the lengtli of the head, but hi a fish of ca 2 metres they aie contained 

 more tlian 8 times. 



