Plaie 87. 

 1-11. Palseotropus Loveni A. Ag. ; "Challenger" Station 210. 



1. Specimen 23 mm. in length, seen from the actinal side. 



2. The same, seen from the abactinal side. 



3. The same, seen in profile, facing the left posterior interambulacrum. 



4. The same, seen facing the anal system, sub-anal fasciole, and odd interambulacrum. 



5. Actiuostome and adjoining plates of a specimen 21 mm. in length. 



6. Abactinal system and adjoining plates of same specimen as fig. 1, 



7. Interior view of the same as fig. 6. 



<S. Actinostome of the same specimen as fig. 1. 



9. Anal system of the same. 



10. Actinostome of specimen 21 mm. in length. 



11. Anal system of specimen 17 mm. in length. 



