COMPARATIVE STUDY OF SCOMBROID FISHES. 
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Chiefly found on the coast of the southwestern part of our country, in Kyushyu 
and Chosen. More or less abundant in the Japan Sea. Not found in the 
clear warm water of the Kuroshiwo. It is said that this species is often found 
at a spot where two currents of water meet in violent commotion, and this 
species seems to have habits similar to spearfishes. 
Whether Scomber sinense Lacépède and Cybiurn chinense Cuvier are 
synonyms of this species is not quite certain, as their descriptions being 
founded on a Chinese picture are very poor ; but so far as we know there is 
no other species in the oriental waters than the present one which lias the 
lateral line bent beneath the first dorsal. Therefore the Chinese picture on 
which these species were founded will probably represent this species. 
Cybium guttatum Cuv. & Val. 
Kahpah. 
Fig. 61. 
? Scomber guttatus, Bloch, Schneider, 23, Taf. 5, 1801. 
Cybium guttatum, Cuv. & Val., Hist. Nat. Poiss. VIII, 173, 1831; Güuther, Cat. II, 371, 
1860; Day, Fish, India, 255, Pi. LV, Fig. 1, PI. LVI, Fig. 4; Cantor, Malay Fish., 
Ill, 1849; Kishinouye, Sui. Gak. Ho, I, 379, 1916. 
D. 16, 19 or 20, 8 or 9. A. 21, 8. Gill-rakers 2 + 8. Yert. 21 + 30. 
Body elongated, laterally compressed, and nearly naked outside of the 
corselet. Caudal portion long and broad. Second dorsal, anal, and the caudal 
well developed, but the pectorals are small. Teeth in jaws sharp, about 17, 
minute teeth on the vomer, palatines, and the tongue. Lateral hue is nearly 
straight with a slight bend, a little before the caudal keel. Numerous short 
branches are found in the anterior half. They are oblique, closely set, and are 
longer towards the nape, diverging backward. The scales on the lateral fine 
are about 170. 
The right lobe of the liver is large, while the middle lobe is short and 
narrow. Intestine is slender with a loop at the middle. The inner wall 
of the stomach has about twenty longitudinal folds, half the number of which 
are smaller and alternate with the larger. Pylorus descending, stump at the 
distal end, and communicates with the duodenum by a very narrow opening. 
The duodenum is nearly as long as the pylorus, wide at the fore end, with one 
anterior pyloric canal and another large posterior canal. Air-bladder wanting. 
