The Voyage of H.M.S "Challenger: 



Asteroidea PI. IV. 



■.'ther Sel 



1-2. PARARCHASTER S PIN 51 SSI M U S, n.sp. 3-4. PARARCHASTER PED1CIFER, n . sp 



5 - 6 . P A R A R C H A ST E R A R M A T U S , n.sp. 7 - 8 . P A R A R C H A S T E R S E M I S Q U A M AT I) S , nsp. 



9 -10. DY T AST E R EXIL1S, n.sp. 11 - 12 . D Y T A S T E R SPINOSUS, n.sp. 



