76 BULLETIN OF THE 



which must be considered a form intermediate between P. Ehrenbergii 

 and Victorella. 



The architecture of the Victorella and Paludicella stocks is, then, sim- 

 ilar, in that they both consist of a row of individuals successively formed 

 at a stolonic tip. The resemblance is heightened by the fact that, as in 

 Paludicella, so also in Victorella, a pair of lateral buds is given off from 

 each zooecium to form latei-al branches (Kraepelin, '87, p. 157). As in 

 Paludicella, so also in Victorella, communication plates, Rosettenplatten, 

 arise early to separate the zooecia from each other. But Victorella 

 differs from Paludicella in this, that while in the latter the neck of the 

 polypide does not become the centre of origin of new buds, in the former 

 it does, just as is the case in Plumatella (Kraepelin, '87, Plate III. 

 Fig. 75) ; that is to say, there are laid down from the tip of the branch 

 three masses of bud-producing tissue, besides that which goes to form 

 the polypides of the primary branch. The graphic representation of 

 this species will therefore be more complicated than that of Paludicella, 

 and has this form : — 



\ * 



« c « 



« 

 » » 



* a * b * a * 



(7)^-1)* C*a* B* b* a* a* A*c*b*a»a*^»a» 



* * * * 



a» »o»a»a» 



b» «^*a*a»o»)3» 



* « * » * 



» * * 

 * a * b * a » 



Compare with (1), page 73, and (4), page 74. 



From around each individual of the series A, B, C, etc., which has 

 been derived from the tissue of the stolon tip, there arise series of 



