112 SEA-SHORE LIFE 



time within hydroids, forming gall-like swellings. The legs are 

 often sufficiently translucent to permit one to observe the wave-like 

 contraction of the stomach-tubes within them. 



An excellent account, accompanied by good figures of the sea 

 spiders of our coast, is given by Edmund B. Wilson in the "Report 

 of the United States Fish Commission" for 1878; and in "Trans- 

 actions of the Connecticut Academy of Science," Vol. V. 



