Plate 71. 

 Araeosoma bicolor A. Ag. and CI. 



1. Actinal view of partly denuded specimen. 



2. Abactinal view of same. 



Natural size. 

 Owing to an oversight of the printer the position of the figures of this plate has acci- 

 dentally been reversed. In all the other plates the right anterior interambulacrum is on 

 the right of the anterior or median ambulacrum. 



