FIRST DORSAL FIN 



SECOND DORSAL, OR CAUDAL. OR 



ADIPOSE FIN. TAIL FIN 



PECTORAL FINS (21. 



PELVIC. OR 

 VENTRAL FINS (21. 



V'lg. 11. — Diagram sliuwing anaiii4i-nu'ni ol [1r- lin.s ul Salniun, Sea-Uoiil and Truut. 



See page 53. 



