COMPARATIVE STUDY OF SCOMBROID FISHES. 
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a. b, c, d. The same as in the preceding plate. 
PLATE XXX. 
Fig. 53. Kctsuwonus pelamis. 
Fig. 54. Euthynnus yaito. 
PLATE XXXI. 
Fig. 55. Auxis him. 
Tig. 56. Auxis mam. 
PLATE XXXII 
Fig. 57. Skull and vertebral column of Katsniconus pelamis. 
Fig. 58. Skull and vertebral column of Euthynnus yaito. 
a. Dorsal view of the skull, b. Ventral view of the skull, c. Ventral view of the anterior 
vertebrae, till the first haemal arch is closed, d. Dorsal view of the caudal verttbrae. 
e, /. g. Three stages of haemal processes till they unite to form the haemal canal in 
precaudal vertebrae. 
PLATE XXXIII. 
Eig. 59. Skull and vertebral column of Auxis hira. 
Fig. 60. Skull and vertebral column of Auxis marie. 
a. Dorsal view of the skull, b. Ventral view of the skull, c. Ventral view of the vertebral 
column to the first caudal vertebra, in which the haemal arch is closed d. Dorsal view 
of the caudal vertebrae in which the lateral process or ridge is more or less developed, 
e, f g. Three stages of the development of the haemal processes in the precaudal 
vertebrae. In the last stage the epihaemal process is remarkably developed. 
PLATE XXXIV. 
Fig. 61. Oybium guttalum. * 
Fig. 62. Grammatorcynus bilineatus. 
Fig. 63. Unstreitiger chrysozonus. 
Fig. 64. Skull and vertebral column of Neothunnus rams. 
a. Dorsal view of the skull, b. Ventral of the skull, c. Ventral view of the anterior 
vertebrae till the first haemal arch is closed, d. Dorsal view of the caudal verttbrae. 
