PLATE I. 



Page 



Figs. 1, 2. Paearchaster spinosissimus, n. sp. . . . 12 



Fig. 1. Abactinal aspect ; magnified 2 diameters. 

 Fig. 2. Actinal aspect ; magnified 2 diameters. 



[For magnified details of this species see PI. IV. figs. 1, 2.] 



Figs. 3, 4. Pararchaster pedicifer, n. sp. . . . 15 

 Fig. 3. Abactinal aspect ; natural size. 

 Fig. 4. Actinal aspect ; natural size. 



[For magnified details of this species see PI. IV. figs. 3, 4.] 



Figs. 5, 6. Pararchaster armatus, n. sp. . . 19 



Fig. 5. Abactinal aspect ; magnified 2 diameters. 

 Fig. 6. Actinal aspect ; magnified 2 diameters. 



[For maguified details of this species see PI. IV. figs. 5, 6.] 



