EXPLANATION OF PLATE V. 



Fig. 1. Aglaopheuia howeiisis, Briggs, portion of hydroclade with hydro- 

 thecee, lateral aspect. Di'awu from the holotype from 

 Middle Beach, Lord Howe Island. 



2. Aglaofhenia hoirensii:, Briggs, portion of hydi'oclade with hydi'o- 



thecae, anterior aspect. Drawn from the holotype. 



3. Aglaophenopsis vaga, Briggs, portion of hydroclade with hydro- 



thecse, lateral aspect. Drawn from the holotype from 

 off Botany Bay, New South Wales, 50 fathoms. 



4. Aglaa'phenopsis vaga, Briggs, portion of hydroclade with hydro- 



thecae, anterior aspect. Drawn from the holotype. 



5. Aglaopheuopsis vaga, Briggs, proximal internode of hydrocladinm 



with phylactogonium. Drawn from the holotype. 



6. Aglaopheuopsis vaga, Briggs, gouaugium seen in lateral aspect. 



Drawn from the holotype. 



7. AglaoplteKopsis vaga, Briggs, gonangium seen in frontal aspect. 



Drawn from the holotype. 



8. Plnmularia balei, Bartlett, portion of hydroclade with hydro- 



thecee, lateral aspect. Di'awn from a specimen from Lord 

 Howe Island. 



9. Fluruularia halei, Bartlett, female gonangium (after Mulder and 



Trebilcock). 

 10. Plwmuhiria halei, Bartlett, male gonangium (after Mulder and 

 Trebilcock). 



