176 



THE FLOATING ANIMALS 



Fig. 103. — Tomopteris. (From the " Cambridge Natural 

 History," by permission of Messrs. Macmillan.) 



Fig. 104. — Types of Ch^etopod Larvae. 

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



^3 



Fig. 105. — Spadella. 



Fig. 106. — Sagitta. 



