ILLUSTRATIONS. 



The Rocky Shore at Low- 

 water . . . Fronli 



The Sandy Shore at Low- 

 water . . . jaci 



Foraminifera 



Polycistin 



Sponges 



Sec. ion through Crumb-of- 

 Bread Sponge 



Grantia compressa 



Grantia ciliata ... 



Sea Oak Coralline 



Calycles of Sertularia enlarged 



Plumulatia pinnata 



Plumularian, portion enlarged 



Haliclystus 



Sea- Mat (Flustra) 



Larvae of Aurelia 



Marigold (Aurelia aurita} 



Portuguese Man-o'-War 



Tube-mouthed Sarsia 



Forbes' yEquorea 



Beroe and Young 



Beadlet 



Snowy Anemone 



Rosy Anemone ... 



Orange-disk Anemone 



Opelet 



Dahlia Wartlet... 



Sun Star 



Purple-tipped Urchin 



Feather-star 



Starlet 



Granulate Brittle-star 



