206 CYSTOSPEEMEvE. 



25. VESICULIFEKA FLAVESCENS Hass. 

 Plate LIIL Fig. 9. 



Char. Filaments about equal in size to those of V. crispa. 

 Cells four or Jive times as long as broad. Sporangia cir- 

 cular, lodged in cells of the same form. 



Hob. Penzance : Mr. Rolfs. 



This species I have only received from Mr. Ralfs and Mr. 

 Jenner. 



26. VESICULIFEBA AFFINIS Hass. 

 Plate LIIL Fig. 1. 



Char. Filaments about equal in size to those of V. vernalis. 

 Cells./?ye or six times as long as broad. Sporangia cir- 

 cular, lodged in cells which are slightly ovate and protube- 

 rant at the sides. 

 Hab. Cheshunt : A. H. H. 



Not an uncommon species, perhaps, but a variety of V. 

 vernalis. 



27. VESICULIFERA IIEXAGONA Hass. 

 Plate LIIL Figs. 11, 12. 



Char. Filaments somewhat stouter than those of V. aqualis. 

 Cells three or four times as long as broad. Sporangia cir- 

 cular, contained in inflated cells of an hexagonal form. 



Hab. Cheshunt: A. H. H. 



This is a very distinct little species, and not uncommon : 

 a variety occurs with filaments considerably finer. This may 

 also be distinct. 



28. VESICULIFERA DUBIA Hass. 



Plate LIIL Fig. 14. 

 Char. Filaments of the same size as those of V. hexagona, 



