PLATE XXIII. 



1-4. Rhinobrissus micrasteroides A. Ag. 



Seen in profile, covered with spines. 

 Same, seen from the actinal side. 

 Seen from above, denuded. 

 Seen facing the posterior extremity. 

 Figs. 1-4 from a specimen 23 mm. in long, diameter. 



5-14. Palseotropus Josephine© Loven. 



Seen from above, covered with spines. 



Same, seen from the actinal side. 



Denuded specimen, about the same size, seen from the abactinal side. 



Same, seen from the actinal side. 



Same, seen in profile. 



Same, seen from the anterior extremity. 

 ii from the anal extremity. 



Magnified view of abactinal system of same. 

 Fig. 13. Magnified view of anal system. 

 Fig. 14. Magnified view of actinal system. 



