except those of the genus Katsuwonus there are rather large vessels 

 between the base of the pectoral and the anus, but these are not related 

 to the dark lateral tissue., The anterior end of the cutaneous vein 

 divides into the renal portal veins and does not connect directly with 

 the Cuvierian ducts „ No part of the kidneys appears in the haemal canal 

 except in the genus Katsuwonus and the portion of the kidneys which lies 

 between the peritoneum and the ribs is long, running almost the full 

 length of the visceral cavity,, Although it is generally a single organ 

 which lies along the very center line of the body,, in the genus Auxis 

 it divides posteriorly into two slender branches » -The ureters generally 

 open separately in right and left branches,. Anteriorly the tips of the 

 intermuscular bones reach to the subcutaneous tissue,, buc posteriorly 

 a number of them are divided into two parts „ On one or more of the 

 vertebrae the intermuscular bones and the ribs are joined at their bases „ 

 An air bladder is lacking „ The fishes of this family are generally small., 

 under three feet in length 



On The Order Plecostei Established By Dr. Kishinouye 



TN; In the descriptions of the specialized vascular systems of the tunas 

 written in English by Kishinouye and quoted in this paper in the original 

 language by Takahashi s these vessels are consistently characterized as 

 cutaneous o The corresponding word in the Japanese text, however^, is 

 more accurately translated as "subcutaneous" and since that seems to be 

 a more exact description of the actual location of these vessels, the 

 latter terminology has been followed in this translation,, 



The figures which are described at the end of this paper were not- 

 clear enough to be copied for reproduction and had to be omitted c 



Introduction 



In 1915 Dr. Kamakichi Kishinouye published a paper in the first 

 Volume of the Suisan Gakkai Ho in which he discussed the anatomy, 

 distribution, and so forth, of the tunas, bonitos, and cybiidso He 

 established the three families of the Thunnidae, Cybiiuae, and Scombridae. 

 He assigned the genera Thunnus , Katsuwonus , Euthynnus , and Auxis to the 

 Thunnidae, the genera Acanthocybium , Cybium , Sarda, and Gymnosarda to the 

 Cybiidae, and the genera Scomber , Rastrelliger ,, and G r arnica t o r c ynu s to the 

 Scombridae. He reported that the fishes of the family Thunnidae have the 

 dark lateral muscle tissue developed close to the central axis of the body 

 and further that the fishes of this family have peculiar subcutaneous 

 blood vessels on the sides of the body» ^hen in 1917 in the second Volume 

 of the same journal, under the title "A New Order of the Teleostomi M „ he 

 split the Thunnidae into two families, the Thunnidae and the Katsuwonidae „ 



