THE DANISH INGOLF- EXPEDITION. 



VOLUME V. 



6. 



HYDROIDA. 



(PART I.) 



BY 



HJALMAR BROCH. 



WITH 2 PLATES AND 20 FIGURES IN THE TEXT. 



-*4KiHf<- 



COPENHAGEN. 



PRINTED BY BIANCO LUNO. 

 1916. 



