Sib o ga- Expeditie 



XXIV' a 



POLYCHAETA ERRANTIA OF THE 

 SIBOGA EXPEDITION 



BY 



D R . R. HORST 



Leyden 



PART I 



AMPHINOMIDAE 



With 10 plates 



late E. J. BEILL 



PUBLISHERS AND PRINTERS 



I.EYDEN — 1912 



