COMPARATIVE STUDY OF SCOMBROID FISHES. 



373 



::=ä^lE3S^^^^^^;, 



VI r 



VI 



VII 



VXII 



IX 



ioiia 



I 



^T^' ^/-HK 



r 



■^nr 



-:^^^ 



f^ 



V,^ ni 



V 



^ nr ^ VI 



":? 



f2 



VII 



vm 



IX 



Fig, (J. Diagrams showing the arterial system of the scombroid fishes. 

 The npper row represents the anterior part o£ the visceral arterial system, showing the ori- 

 gin of efferent branchial arteries, ooelinco-mesenteric artery, and cutaneous arteries. The Romau 

 ntunerals uenote the cardinal number of vertebrae. The other rows represent the visceral arterial 

 system. '«, Scor,\})tT japonicus ; 6, Cyhium niphoniiim ; c, Sarda orienialis ; d, Thunmis genm ; 

 e, Thxmmis orienWw; /, Pamthunmis mebacfn ; ij, Neothunnus macropterus ; h, Xeothunnus 

 r-irus; (, K'ltsu'.conus pelwnis : j, Exithynmis ya'tto. 



