212 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 14 



PLATE 7 



Fig. 1. Callopora cornicuUfera (Hincks), ovicell and two sizes of 

 lateral avicularia. 



Fig. 2. Callopora aurita (Hincks). Note diflFerence in orientation of 

 avicularia in presence or absence of ovicell. 



Fig. 3. Copidozoum spinatum new species. Note vicarious avicularium 

 and array of spines. 



Fig. 4. Copidozoum tenuirostre (Hincks). 



Fig. 5. Copidozoum protectujii (Hincks). 



Fig. 6. Retevirgula areolata (Canu and Bassler), showing vicarious 

 avicularia, connecting tubules and fenestrated ovicell. 



Fig. 7. Retevirgula lata new species. Zooecium and ovicell and two 

 kenozooecia, one with an avicularium. 



