84 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 4 



PLATE 5 



Fig. 21. liydract'inia I'olycarpa 



a. Nutritive zooid. 



b. Female generative zooid. 



c. Dactylozooid. 



d. Spine. 



Fig. 22. HydriK Imia qiiadritjfmina 



a. Nutritive zooid. 



b. Nutritive zooid, male <:;enerative zooid and spine. 



c. Male generative zooid. 



d. Spine. 



Fig. 23. Podncorync reticulala 

 a. Nutritive zooid. 

 b and c. Generative zooids with medusa-buds. 



Fig. 24. Tithitlaria Integra 



A zooid showing proximal and distal tentacles and gonophores. 



