EXPLANATION OF THE PLATES. 



Plates I.-X&. — Collotyped reproductions of magnified photographs taken by Mr. Murray (of 

 Messrs. Morgan and Kidd), five times natural size throughout, except PI. VIII., figs. 4 

 and 5. 



Plates XI.-XIV. — Lithographic reproductions from drawings of the specimens, by Mr. A. T. 

 Hollick, to illustrate the growth-form alone, without regard to relative sizes. 



FIG. 



1. 

 •I. 

 3. 

 4. 

 5. 

 6. 

 7. 

 8. 

 9. 



PLATE I. 



Lateral calicles of G. Solomon Islands 1 ; for growth-form, see PI. XI. fig. 1. 



fig. 2. 

 fig. 3. 

 fig. 4. 



Upper calicles of G. Solomon Islands 2 ; 



,, „ G. Solomon Islands 8 ; 



„ „ G. Loyalty Islands 1 ; 



„ „ G. Tonga Islands 1 ; 



„ „ G. Tonga Islands 2 ; 



„ „ G. Tonga Islands 3 ; 



Lateral calicles near the top of G. Samoa 1 ; 

 Calicles from detached basal fragment of the same. 



fig. 5. 

 fig. 6. 

 fig. 7. 

 fig. 8. 



PLATE II. 



1. From explanate portion of G. Great Barrier Reef 1 ; for growth-form, see PI. XI. fig. 9. 



2. From the top of G. Great Barrier Reef 2 ; for growth-form see PI. XI. fig. 10. 



3. Lateral calicles of the same. 



4. From the side of G. Great Barrier Reef 3 ; for growth-form, see PI. XI. fig. 11. 



5. Median calicles of G. Great Barrier Reef 4, a fragment. 



6. Lateral calicles of G. Great Barrier Reef 5, a fragment. 



7. From the top of G. Great Barrier Reef 6 ; for growth-form, see PI. XL fig. 12. 



8. Lateral calicles of the same. 



9. From the top of G. Great Barrier Reef 7, specimen a ; for growth-form of specimen b, see 



PI. XII. fig. 1 ; other details of the same coral are given on the next plate (figs. 1 and 2). 



PLATE III. 



1. New calicles on specimen b of G. Great Barrier Reef 7, see Text (p. 54) and PI. XII. fig. 1. 



2. Section of specimen a, showing perforate septa and tabula?. 



3. Near the edge of the top of G. Great Barrier Reef 8 ; for growth-form, see PI. XL fig. 13. 



4. From the top of G. Great Barrier Reef 9. 



5. Median calicles of G. Great Barrier Reef 10 ; for growth- form, see PI. XII. fig. 2. 



2 D 



