VELATA 



465 



Fig. 198. — Aboral view of Pteraster stellifer. mars, Dorsal brood-pouch. 

 X IJ. (From Sladen.) 



Fio. 199. — Oral view of Hymenaster pellucidus. 

 VOL. I 



X 1. (From Wyville Thomson.) 

 2 H 



