PLATE X. 



Page 

 Fig. 1. Callozostron mirahilis, FevceYal Wright. Colony; natural size, . . 48 



Fig. 2. „ „ Section through colony, showing the arrangement 



of the polyps on the flexible axis ; enlarged. 



Fig. 3. ,, „ Two polyps, greatly magnitied, showing scales. 



Fig. 4. ,, „ Terminal portion of main axis ; enlarged. 



Fig. 5. ,, „ Section of main axis, decalcified. 



Fig. 6. ,, „ Section through axis, showing symmetrical arrange- 



ment of canals. 



