PHOTOTYPE PLATE NO. /. 5 



the variety of which a small fragment is represented by Fig. 3 in Plate IX. in the coloured 

 lithographs. It having proved on examination to be a hitherto undescribed species, Mr. George 

 Brook, F.L.S., — who is at present occupied in compiling a catalogue of all the Madrepoi-aria 

 in the National Collection, — has associated it in a recently published list, by way of com- 

 pliment, with the author's name. In Nos. 12 and 24, occupying more central positions, are 

 depicted a species closely allied to the form Fig. 1 7 of the same coloured plate. Like it, in 

 life, they have the bases and main shafts of the branches buff colour, and all the terminations 

 brilliant magenta. The more typical Stags'-horn corals, represented by Nos. i, 3, 7, and 25 of 

 the diagrammatic plan, vary, through innumerable shades of green, yellow, lilac, and brown. 

 Occasionally, as in No. 15, Madrepora /axa, occupying the uppermost position on the right- 

 hand side, the entire living corallum is, as depicted in Fig. 6 of the coloured plate previously 

 quoted, a brilliant electric-blue. 



DIAGRAMMATIC KEY TO PLATE I. 



10 



& 



rf 



8+ ' 



\Z 



16 





21 



17 



18 



19 



221 



23 



24 



1, 7, 25 



2. 5 



3, 6, TO, 12, 24, 

 4, II, 



27 



Madrepora muricaia var. 

 Madrepora rosaria. 

 Madrepora formosa. 

 Madrepora Britggemanni. 

 Seriatopora ocfoptera. 

 Madrepora confer/a. 



28 



EXPLANATION. 



13. Galaxea Esperi. 



14. Seriatopora hystrix. 



15. Madrepora laxa. 



16, ig. Pocillopora damicornis. 



17, 28. Stylopora palinata. 



25 



ir 



15 



20 



26 



29 



20 Madrepora Hemprichi var. 



21. Madrepora Keiiti. 



22, 27. Fungia lacera. 



23. Podobacia Crustacea. 



26. Mussa inultilobata. 



18. Madrepora rosaria va.T. diimosa. 29. Herpetolitha talpina. 



The very delicate and profusely branched species, Madrepora rosaria van. No. iS, located in 

 an almost central position in the group, is most usually of a pale lemon-yellow hue throughout, with 

 the exception of the e.\treme tips or distal terminations, which vary from white to the palest mauve 



