COMPARATIVE STUDY OF SCOMBROID FISHES. 
369 
Fig. P. Diagram showing the vertebral and cutaneous venous systems of Plecostean fishes. 1, Thunnus oriental's ; 
Parathunnus mebachi • 3, 4, Neothunnus macroplerus • .5, Katsuiconus pelamis ; 6, Euthynnus and Auxïtî. 
The dotted line shows the outline of the renal organ. 
