PLATE X. 



Page 

 Fig. 1. Callozostron nw'ahilis, Vevceval Wright. Colony; natural size, . . 48 



„ ,, Section through colony, showing the arrangement 



of the polyps on the flexible axis ; enlarged. 



,, ,, Two polyps, greatly magnified, showing scales. 



,, ,, Terminal portion of main axis ; enlarged. 



„ ,, Section of main axis, decalcified. 



,, „ Section through axis, showing symmetrical arrange- 



ment of canals. 



