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"). 



.. i xj 



FIG. 150. DOLIOLUM. FIG. 151. DOLIO- FIG. 152. DOLIOLUM. 



A. The nurse form LUM. c Tlie wandering 



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



ofD. 



Fie. 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 



