548 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



PLATE 40 



Fig. 1. Hippodiplosia insculpta (Hincks), young fertile zooecium 

 showing aperture compared with that of the infertile zoo- 

 ecium. 



Fig. 2. The same, ovicell. 



Fig. 3. Hippodiplosia reticulato-punctata (Hincks), reticulate zoo- 

 ecium, suboral avicularium and ovicell. 



Fig. 4. Hippodiplosia americana (Verrill), zooecia with ovicell and 

 lateral avicularium. 



Fig. 5. /fz/i/)0^z/)/oi2a />^r/uja (Esper), zooecium with ovicell. 



Figs. 6 and 7. The same, two forms of operculum of infertile zooecia. 



Fig. 8. The same, operculum of fertile zooecium. 



Fig. 9. Emballotheca obscura new species, zooecia with ovicell, aper- 

 ture and suboral avicularium. 



Fig. 10. The same, operculum. 



Fig. 11. Gemelliporidra colomhiensis new species, zooecium with ovi- 

 cell and lateral avicularium. 



Fig. 12. The same, operculum. 



Fig. 13. Hippothyris emplastra new species, zooecium with ovicell, 

 suboral avicularium and the plastron-like frontal. 



Fig. 14. The same, details of aperture. 



