THE GALLS D YOUNG OF ONE OF THE SEA-SPIDERS. 
The young of this family of Sea-spiders (Phoxichilidium) live a semi-parasitic life within the digestive organs of hydroid 
colonies, such as the Bell Coralline here shown, and form a growth after the nature of a gall. The young are hatched from an 
egg, and are provided with a proboscis, feele and from one to four pairs of legs It is here greatly magnified. 
