EXPLANATION OF THE PLATES. 



Plates I.-X&.— CoUotyped 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. 

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



FIG 



PLATE I. 



fig. 3. 

 fig. 4. 

 fig. 5. 

 fig. 6. 

 fig. 7. 

 fig. 8. 



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



•I. Upper calicles of G. Solomon Islands 2; - •• fis- 2 



3_ _j „ G. Solomon Islands 3 ; 



4_ „ G. LojjalUj Islands 1 ; 



5. „ „ G. Tonga Islands 1 ; 



g_ ^, „ G. Tonga Islands 3 ; 



7. j^ J, G. Tonga Islands S ; 



8. Lateral calicles near the top of G. Samoa 1 ; 



9. Calicles from detached basal fragment of the same. 



PLATE II. 



1. From explanate portion of G. Great Barrier Beef I ; for growth-form, see PI. XL fig. 9. 



2. From the top of G. Great Barrier Beef 3; for growth-form see PI. XI. fig. 10. 



3. Lateral calicles of the same. 



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



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



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



7. From the top of G. Great Barrier Beef 6; iov growth-form, see PL XL fig. 12. 



8. Lateral calicles of the same. 



9. From the top of G. Great Barrier Beef 7, specimen a ; for growth-form of specimen 6, see 



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



PLATE III. 



1. New caUcles on specimen b of G. Great Barrier Beef 7, see Text (p. 54) and PL XII. fig. 1. 



2. Section of specimen a, showing perforate septa and tabulre. 



3. Near the edge of the top of G. Great Barrier Beef S ; for growth-form, see PI. XI. fig. 13. 



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



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



2 D 



