r> 





Siboga-Expeditie 



XXVI bis 



THE PTEROBRANCHIA OF THE SIBOGA-EXPEDITION 



WITH AN ACCOUNT OF OTHER SPECIES 



RY 



SIDNEY F. HARMER, sc.d., f.r.s. 

 / • » 



Fellow of King's College, Cambridge, and Superintendent of the University Museum of Zoology 



With 14 plates and 2 text-figures 



LATE E. J. BKTLL 



PUBLISHERS AND I'RIN'IEKS 



I.EYUKN — 1905 





