296 
KAMAKICHI KLSIIINOUYE : 
I liegan the investigation of the scombroid fishes in 1911, and since then 
I have devoted my time chiefly to this study. As the result of the investi¬ 
gation, tunnies and bonitos were found to be the most specialized forms of the 
bony fishes with many distinctive characters, hitherto unknown to science. The 
results have from time to time been reported in Japanese in the “Suisan 
Gakkwai Hô ” (Proceedings of the Scientific Fishery Association). 
The materials for the present study were chiefly collected at our laboratory 
from the fish-markets of Tokyo, and a part from various localities by the:author 
himself, and through the courtesies of institutions and private persons. The 
author wishes to acknowledge with thanks the kind assistance of Messrs. Seizö 
Adachi, Yeiji Akiyama, Takeo Aoki, Hikotaeö Asano, Koichi Kamei, Nihei 
Matsuno, the late Kötarö Mayeda, Yôzô Nakajima, Seishi Ok ad a, Naotarö 
Ota, Yasuji Ohta, Katsuya Tago, Kiyotomo Tashiro, Seijirö Tominaga, 
Yöjirö Wakiya, Kichitarô Yamada &c., 1 resides many friends in our College, 
he Imperial Fisheries Bureau, and Suisan Koshyujo ; Prof. W. C. M’Intosh, 
St. Andrews University, Scotland ; the late Dr. Eichaed Rathbun, U. S. 
National Museum ; Prof. D. S. Jordan, Stanford University, Cal. ; Messrs Kösaku 
Iida, Kihei Nasu, the late Noriyoshi Toyama , 1 &c. at Los Angeles ; and Mr. 
E. Gobee, Fishery Station, Batavia. Finally I wish to express my appreciation 
of the painstaking work of the artist, Mr. Shigezö Kikkawa, who has endeav¬ 
oured to represent very accurately the various species, and even the number and 
exact arrangement of scales in each species, and troublesome representations] of 
anatomical structures in detail. 
Comparative Anatomy. 
EXTERNAL CHARACTERS. 
External Form of the Body. 
In general the form of the body is nicely fusiform, so as to give the least 
resistance in locomotion, but in the case of Gybium chinense the anterior paid 
of the doisal outline is concave (fig. 34). The ventral outline of the body is 
a little more curved than the dorsal, to balance dhe heavy muscular paid with 
1. One of the pioneers who established the tuna fish trade in South California. 
