COMPARATIVE STUDY OF SCOMBROID FISHES. 
373 
Fig. Q. Diagrams showing the arterial system of the scombroid fishes. 
The tipper row represents the anterior part of the visceral arterial system, showing the ori¬ 
gin of efferent branchial arteries, coeliaco-mesenteric artery, and cutaneous arteries. The Roman 
numerals denote the cardinal number of vertebrae. The other rows represent the visceral arterial 
system, a. Scomber japonicus ; b, Cybium niphonium ; c, Sarda orientalis ; d, Thunnus germo ; 
e, Thunnus orientalis ; f, Parathunnus mebachi ; g, Neothunnus macropterus ; h, Neothunnus 
rams ; i, Katsuwonus pelamis : j, Euthynnus yaito. 
