THE DANISH INGOLF-EXPEDITION. 



VOLUME V. 



HYDROIDA. 



(PART I.) 



BY 



HJALMAR BROCH. 



WITH 2 PLATES AND 20 FIGURES IN THE TEXT. 



->4>>'t:?<4-<- 



COPENHAGEN. 



PRINTED BY BIANCO LUNO. 

 I916. 



