The Voyage of H,M S "Challenger" 



Echmi PI XLV 



1-e COELOPLEURUS.7-10 SCH IZ ASTER . 11-19 LINOPN EUSTES. 20-24GEN1COPATAG US. 

 25-36 CYSTECHINUS.37-43SPATAG0CYST1S. 44-45 ECHINOCREPIS. 46-59 POURTALESIA. 



