594 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



PLATE 63 



Fig. 1. Costazia surcularis (Packard), zooecium with ovicell and 



lateral-oral avicularia. 

 Fig. 2. The same, younger zooecium showing form of aperture. 

 Fig. 3. The same, giant interzooecial avicularium. 

 Fig. 4. Costazia ventricosa (Lorenz), zooecium with ovicell, form 



of aperture and avicularia. 

 Fig. 5. The same, young zooecia. 

 Fig. 6. Costazia nordenskjoldi (Kluge), zooecium with ovicell and 



high lateral-oral avicularia. 

 Fig. 7. The same, young zooecium, showing form of aperture and 



development of ovicell and peristome. 

 Fig. 8. Costazia procumbens new species, zooecia, form of aperture 



and flaring peristome. 

 Fig. 9. The same, with ovicell and inflected peristome (from the 



same colony as fig. 8). 

 Fig. 10. The same, interzooecial avicularium. 



