-:ff^. 



2nd Ser. ZOOLOGY.] 



Q.in 



[VOL. IX. PART 2. 



THE 



TRANSACTIONS 



OF 



THE LINNEAN SOCIETY OE LONDON. 



ON SOME POINTS IN THE VISCERAL ANATOMY OF 

 THE CHARACINIDiE, WITH AN ENQUIRY INTO THE 

 RELATIONS OF THE DUCTUS PNEUMATICUS IN 

 THE PHYSOSTOMI GENERALLY. 



BY 



WALTER S. ROWNTREE, B.Sc, F.L.S. 



LONDON: 



PRINTED FOR THE LINNEAN SOCIETY 



BV TAYI.OU AND FRANCIS, RKI) UON COURT, FLEET STREET. 



SOLD AT THE SOCIETY'S APARTMENTS, BURLINGTON-UOUSE, I'lCCADILLV, W., 

 AND BY LONGMANS, GKKEN, AND CO., PATEKNOSTEU-ROn". 



July 1903. 



