288 



A B 



Length of pro-rachidial margin of largest 



pinnule ..... 



Breadth of insertion of largest pinnule 

 Breadth of largest pinnule . 

 Distance between pinnules . 



The zooid-plate is basal. It is large, thick and very distinct, the yellow 

 colour contrasting with the mottled appearaiice of the pinnule. The zooid- 

 streak on the meta-rachidial surface is long and narrow, consisting of a single 

 row, but at one point on specimen A there are three abreast. The pinnules are 

 fan-shaped, very broad and thick. The rays, which are eleven to seventeen in 

 number, are composite and substantial, but in one specimen (A) this is not so 

 marked ; consequently the margin is much more ragged and numerous limy 

 needles occur in the polyp region. In C the meta-rachidial surface is free 

 throughout its entire length, but in A and B the pinnules overlap towards the 

 upper end. The lower part of the stalk is hollow, considerably expanded in A, 

 very slightly in C, and markedly conical in B. The polyps occur mainly on 

 the lower side of the pinnules and there are a few scattered zooids on the upper 



surface. 



The fundamental colour is yellow, but the pinnules and parts of the rachis, 

 especially the pro-rachidial surface, are mottled with green, blue and purple 

 patches, which appear iridescent. 



Localities : A— King Island, Mergui. 

 B and C— Andamans. 



Previously recorded from Raffles Bay (Australia) ; Palaos (Carolines) ; 

 var. molle from Penang, Sumatra, Australia. 



Pteroeides ilicifolium, n. sp. 



Length of pro-rachidial margin of largest pinnule 11 5 mm. 

 Breadth of insertion of largest pinnule . . 7 mm. 

 Breadth of largest pinnule . . . .12 mm. 



Distance between pinnules . . . . 1 "5 mm. 



1 + denotes that the exact length is not definitely known. 



