COMPARATIVE STUDY OF SCOMBROID FISHES. 
459 
Also caught with rods arid lines associated with bonitos and immature tunnies. 
Voracious fish, feeds on small fishes and medium sized plankton. When 
this fish encounters a school of small fishes, it darts into the crowd and scatters 
them in the same way as the pelamids and tunnies. 
This fish attains a total length of ca 60 cm, and a weight of ca 3-£ 
kg, but rarely a fish of one metre and more than 10 kg in weight is found. 
Spawning seems to take place about in May in Taiwan. A young speci¬ 
men measuring 11.5 cm in length was captured near the mouth of Keelung 
Harbour, on August 29, 1917. It is slenderer than the adult, and has about 
a dozen dark transverse bands, more or less oblique. These bands pass the 
lateral line downwards. 
Flesh more or less firm and pretty good in taste. 
Thynnus affinis of Cantor seems to Ire identical with this species ; but as 
he denies the presence of the vomerine teeth, it may be a different species. 
Moreover the colour of fins differs in Thynnus affinis. It is said that the 
second dorsal, anal, and their spurious fins are pale brownish yellow, edged 
and washed with black; while the caudal is yellowish buff, washed with 
brownish in the centre. 
Euthynnus lineatus Kishinouye. 
Euthynnus lineatus, Kishinouye, Sui. Gab. Ho, 1H, 113, 1920. 
This species was created on a single specimen from Manzanillo, Mexico, 
collected by Mr. Naotaro Ota, in 1915. It differs from the other known 
Fig. Z. Euthynnus lineatus 1/1. 
