COMPARATIVE STUDY OF SCOMBROID FISHES, 
411 
This genus comprises a rather aberrant form, more or less related to the 
Xiphiidae. Body elongated, more or less compressed, and covered with small 
narrow scales. Premaxillary produced anteriorly. Preorbital forms the posteri¬ 
or half of the upper jaw. Teeth triangular, compressed, and closely set. 
Branchial lamellae are reticulated at the proximal part. Gill-rakers absent. 
Intermuscular bones are inserted on ribs. The first rib is found on the second 
vertebra, not on the third as in the other. Moreover the rib is shorter than 
the intermuscular bone inseited on it. No auxiliary intermuscular bone, and 
the first intermuscular bone is inserted on the first vertebra. Pelvic girdle 
broad. 
Pelagic and predaceous fish of about two metres. Tropical and subtropical 
seas of the Pacific and Atlantic. 
Acanthocybium solandri (Cuv. & Val.) 
Kamasusawara, ökamasu, okisawara, sawara (Koclii-ken, Kyushyu, 
Ogasawara Is.), tessahku (Taiwan), töjinsawara. 
Figs. 10, 31, 39. 
C^bium solandri, Cuv. & Val., Hist. Nat. Poiss. VIII. 192, 1831. 
? Gybium sara, Bennett, Beechy's Voyage, Fish, 63, PI. 29, Fig. 2, 1839. 
Acanthocybium solandri, Jenkins, Bull. U. S. Fish Com., XXII, 411, 1904 ; Kishinouye, 
Dobutsu. Zus. XX, 2, PI. 2, Fig. 2, 1908. 
? Acanthocybium forbesi, Seale, Philip. Journ. Sei. Biol. VII, 283, 1912. 
Acanthocybium sara, Kishinouye, Sui. Gak. Ho, I, 9, PI. I, Fig. 2, 1915. 
B. 7. D. 26, 11, 9. A. 11, 9. Yert. 23-33 + 31. Gill-rakers O. 
Body elongated and compressed, covered with thin small lanceolate scales. 
Corselet indistinct. First dorsal well developed, descending near the posterior 
end, but its greater part has nearly the same breadth. Second dorsal and 
the anal very small. Caudal fin lunate and powerful. Lateral line is suddenly 
and strougly curved, under the middle of the first dorsal. Many vertical 
branches are given off from both sides of the lateral line. Those branches 
found in the posterior half of the body are longer and more numerous. In 
each jaw about 50-55 triangular teeth, which gradually increase in size poster¬ 
iorly. Yomer and palatines with villous teeth. First rib on the second 
vertebra (Starks (69) found the first rib on the third). 
Stomach conical and very long, reaching a little behind the anterior end 
