SALPS 



187 



rest (Fig. 151) ; large buds of the middle row, C, presently 

 break off (Fig. 152), carrying on their broken stumps 

 tiny buds, which also belong to the middle row. These 



Fig. 148. — Appendi- 

 cularia. (After 



LOHMANN.) 



Fig. 149. — Pyrosoma ("Blake"), 



Fig. 150. — Doliolum. Fig. 151. — Dolio- Fig. 152. — Doliolum. 



A. — The nurse form lum. q — -p^e wandering 



which buds B, C, D. B. — The spoon form. form carrying buds 



ofD. 



Fig. 153. — Doliolum. 

 D. — The sexual form. 



Fig. 154. — Salpa. 

 The sexual form. 



Fig. 155. — Salpa. 



The budding form 

 with a chain of little 

 salps hanging out. 



grow up into the sexual form, D (Fig. 153), and break 

 away in their turn ; their eggs begin the cycle anew. 

 Even more complex, and not yet fully understood, is 



