Plate 7 



Fig. 1. Holoporella hexagonalis, new species, (p. 38). 



1. Surface of the colony, X 20. Some zooecia are operculated. 

 Albatross Station D. 2813. 



2, 3. Holoporella tridentculata Busk, 1881 (p. 39). 



2. The massive colony, natural size. 



3. Surface of a large massive colony, X 20, bearing cylindrical, 



salient tubes. 

 Albatross Station D. 2815. 

 4-8. Osthimosia anaiina, new species (p. 42). 



4. Fragments of the ramose zoarium, natural size. 



5. Ovicelled portion of a ramose colony, X 20. 



6. Portion of a ramose colony, X 20, where the areolar pores are 



little visible and the ovicells are broken. 



7. Surface of a colony, X 20, with large intcrzooecial avicularia 



of duck bill shape. 



8. Young zooecia, X 20, at the extremity of a branch. 

 Albatross Station D. 2813 and D. 2S15. 



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