



wlii.li de< • apidly in diameter and do 



fourth segment of the first pinnule; the cirri are VII, 

 all tli. ents are subequal, rather more than half again 



th« cirri are confined to the interradial angl( 

 I in t\\( with one al each of the remaining three angle 



\ second specimen has the inner arms (.o mm. 

 long and the outer up to 30 mm. in length; the cirri 

 are VIII, in four interradial pairs. 



A third has the inner arms 40 mm. long and 

 the outer up to 11 mm. in length; the <irri are VII, 

 three occurring singly and the others in two interradial 

 pairs. 



A fourth ha-, the inner arms 30 mm. long and 

 the outer up to IO mm. in length from the axillan . 

 the cirri are VII, resembling those in the first descril 



The las! has the inner arms 30 mm. long ; 

 none of the short arms are longer than the pinnule 

 borne by the same axillary. 



All of the specimens are lighl yellow brown 

 in colour. 



In spite of the ünique arm structure it is quite 



that this is merelv the young of C. rotalaria. It will be remembered that in 



kergtuletlsis the so-called -interradial" rays and arms dn not begin to form 



until first five radial rays and arms have attained a very considerable size, and 



not attain the length and stoutness of the latter until the animal is nearly fully grown. 







1. 



;. Natural size. (Courtesy 



Subgenus Comatula Lamarck. 



Key t<> the Species of the Subgenus Comatula. 

 irri- 



r arms more than 100 mm. msually from 125 mm. to 150 mm. 

 in length northern Australia t<> western Java, Singapore, 



Hong Kong and the Philippine Islands) , solarü 



ver) stout and flat dorsally, increasing in lateral diameter 

 Ifth-fourteenth brachials and tapering distally from that point 



rthern Australia] , var. solaris 



and well rounded dorsally, not increasing appre- 

 er from the base northern Australia to west- 

 po re, Hong Kong and the Philippine Is- 

 var. hamata 



. 



' |. M 



