594 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



PLATE 63 



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

 lateral-oral avicularia. 



The same, younger zooecium showing form of aperture. 

 The same, giant interzooecial avicularium. 

 Costazia ^entricosa (Lorenz), zooecium with ovicell, form 

 of aperture and avicularia. 

 The same, young zooecia. 



Costazia nordenskjoldi (Kluge), zooecium with ovicell and 

 high lateral-oral avicularia. 



The same, young zooecium, showing form of aperture and 

 development of ovicell and peristome. 



Costazia procumbens new species, zooecia, form of aperture 

 and flaring peristome. 



The same, with ovicell and inflected peristome (from the 

 same colony as fig. 8). 

 The same, interzooecial avicularium. 



