PLATE 17. 



Agalma okeni. 



Fig. 1. General view of colony, in natural position. From a photograph. X 1.5. 



Fig. 2. yiphosome of another colony, to show the arrangement of the bracts. The nectophores 

 have all been detached. X 2. 



Fig. 3. A very young tentillum. The two terminal filaments and the ampulla are already dis- 

 tinguishable. X 2.5. 



Fig. 4. An older stage. The future involucre is represented by a basal swelling. X 25. 



Fig. 5. StiU older stage. The involucre now encloses one coil of the cnidoband. X 25. 



Fig. 6. A tentillum, in which the involucre encloses three coils of the cnidoband. From its large 

 size this example was probably mature. X 30. 



Fig. 7. A small, but mature tentillum in which the involucre encloses all the seven coils of the 

 cnidoband. X 20. 



Fig. 8. A cf gonophore. X 20. 



Fig. 9. A young bract (Br^), and the muscular lamellae to which older bracts were attached 

 (Br^). St. segment of the stem. X 15. 



Fig. 10. A mature bract. X 4. 



Fig. 11. Lateral view of another mature bract. X 4. 



Fig. 12. A mature nectophore. X 4. 



Fig. 13. A single cormidium. The bracts are all detached, but their muscular lamellae (Br) 

 are shown. S. siphon; T. tentacle; P. palpons; Go. D 9 , Go. Dcf , female and male gonodendra. The 

 right hand side of the figure is di.stal, the left hand proximal (p. 279). X 10. 



Fig. 14. A large palpon (P), with its filament. X 15. 



