VESICULIFERA. 199 



8. Vesiculifera paludosa Hass. 

 Plate LII. Fig. 3. 

 Char. Filaments of less considerable diameter than those of 

 V. lacustris. Cells usiiaUy three times as long as broad. 

 Sporangia ovaly contained in inflated cells of the same 

 form. 

 Vesiculifera paludina 9 Hassall, in Annals of Nat. Hist., 



vol. X. p. 390. 

 Hab. Cliesliunt : A. H. H. Framfield Common : Mr. 

 Jenner. 



This species comes nearest to V. ciliata ; but the inflated 

 cells are of a different form. I know not whether this be tlie 

 species, described by me in the " Annals " as Vesiculifera 

 paludina^ or whether that species be different from V. capillaris^ 

 not having had opportunities of making any comparative ex- 

 amination of them. 



9. Vesiculifera pulchella Hass. 

 Plate L. Fig. 3. 



Char. Filaments of considerable diameter. Cells usually two 

 and a half or three times as long as broad. Sporangia 

 circular^ contained in much inflated cells, xohich are at first 

 oval, then circular, and lastly someiohat hexagonal. 

 Hab. Cheshunt ; Notting Hill : A. H. H. 



This is a very fine species, seeking usually rather pure 

 water ; it is of an intense and beautiful green colour. 



10. Vesiculifera Ralfsii Hass. 



Plate L. Fig. 8. 



Char. Filaments usually rather smaller than those of V. jml- 

 chella. Cells varxjing in length from twice to four times 

 their diameter. Sporangia circular, lodged in cells of an 

 hexagonal form. 



o 4 



