886 
KAMAKICHI KISHINOUYE : 
the outer margin of the first dorsal gradually descends and its spines are 20 
or 21 in number instead of 19 in the later stages, due to the depression of 
posterior spines. In October the immature fish grows to a length of ca 27 cm, 
and attains all the specific characters of the adult. As the fish grows the spines 
in the fin become longer, especially at the posterior part. One year old fish 
is ca 50 cm long and immature, while a two year old fish is about one metre 
and is mature. 
Cijbium koreanum spawns in June and its immature fish is about 24 cm. 
in September. It has a larger head, second dorsal and anal lower than the 
adult, and a few, scarcely visible markings in a row, just below the Lateral 
line in the precaudal region. 
An immature fish of Cykima commersim, 13 cm. long, was caught on 
July 27, 1916 near* Keelung, Taiwan. It has a larger head, remarkably 
broader body, shorter snout, and larger eyes than the adult. The first dorsal 
is higher and its hind portion remains colourless. About ten oblong markings 
are found at the back. They scarcely pass down the lateral line. A little 
larger specimen in the Museum at Taihoku measures 22 cm in length, and has 
larger eyes. The colour markings are elongated downwards, but they are not 
continuous, more or less bead-like, and new markings are added between the old. 
An immature fish of Sarda orientalis, 17 cm in the total length, was 
caught at the end of April, 1922, in a large dip net, called “böke-ami,” in the 
Harbour of Kusliimoto, Wakayama-ken. The net was used at night under 
an artificial light to catch fries of the mackerel. The immature fish of Sarda 
has about twelve transverse bands. In each of these bands we find about six 
Fig. U. Sarda orientalis (immature). 2/3. 
longitudinal bands, which ascend more or less backward. Pectorals, second 
dorsal, and anal are very small. In September, 1900, a little larger immature 
fish, 23 cm in length, was caught in a ground seine on the east coast of 
