VESICULIFERA. 201 



13. Vesiculifera ovata Hass, 



Plate L. Fig. 6. 



Char. Filaments about equal to those of V. virescens. Cells 

 three or four times as long as hroad. Sporangia ovate, 

 occasionally circular, contained in inflated cells of an 

 ovate form. 



Vesiculifera ovata Hassall, in Annals of Nat. Hist., vol. x. 

 p. 392. 



Hah. Cheshunt : A. H. H. Turner's Hill and Heath- 

 field : Mr. Jenner, 



This at all events is a very distinct species, if the preceding 

 one be not equally so. 



14. Vesiculifera concatenata Hass. 

 Plate LI. Fig. 3. 



Char. Filaments thicker than those of V. ovata. Cells six 

 times as long as broad. Sporangium ovate ; cell next 

 the sporangium inflated. 



Vesiculifera concatenata f Hassall, in Annals of Nat. Hist., 

 vol. X. p. 392. 



Hah. Cheshunt Common and pond near Highgate: 

 A. H. H. In a pool between Hook Green and Lam- 

 berhurst, and at Peasmarsh and Henfield : Mr. Jenner. 



Sometimes two or three sporangia occur contiguously to 

 each other. I am not quite sure that this is the species de- 

 scribed in the Annals by me as Vesiculifera concatenata, 

 but believe it to be so. There is not a more distinct species 

 in the genus. 



15. Vesiculifera Borissii Hass. 



Plate LII. Fig. 7. 



Char. Filaments of nearly the same diameter as those of 



