176 



THE FLOATING ANIMALS 



FIG. 103. TOMOPTERIS. (FROM THE " CAMBRIDGE NATURAL 

 HISTORY," BY PERMISSION OF MESSRS. MACMILLAN.) 



FIG. 104. TYPES OF CHJETOPOD LARVAE. 

 From left to right : Mitraria, Nerine, Polygordius, Chaetopterus. 



FIG. 105. SPADELLA. 



FIG. 1 06. SAGITTA. 



