The Voyage of H.M,S.„Challenger." 



HexactinelMa. Pl.XXXTl. 



Litll Ans; v-V/'emet A VTintet rraniimi W 



Fig. 1-13, HYALONEMA SIEBOLDI. J E.Gray, Fig, 14-23, HYALONEMA GRACILE. FE,Schulze, 



