272 



THE OCEAN WORLD. 



size, which Lutken has since called Ophiocoma Riisci. This 

 Echinoderm, which lives in the seas of the Antilles, is furnished 

 with five very flexible rays, which are armed with from three to four 

 rows of spines, those on the upper part of the body being very hard 



Fig. no. — Asterophyton verrucosum (Lamarck). 



ones ; the body and arms of this creature are of reddish brown, 

 streaked with a great number of little white lines. 



The principal type of the Euryalinae is the curious and complex 

 Asterophyton verrucosum of Lamarck. This section includes the 

 Ophiuroids remarkable for the extremely complicated development 

 of their arms, the verj^ multiplied ramifications of these, towards the 

 extremities, being again divided into many thousand very slender 

 appendages, the principal use of which is doubtless locomotion, but 



