168 CONJUGATED. 



greater size of the sporangia ; but these are, I think, of a 

 sufficiently well marked character to justify its being ranked 

 as a distinct species. It has only as yet been found by that 

 indefatigable observer Mr. Jenner. 



3. MESOCARPUS RECURVUS Hass. 



Plate XLIII. Fig. 2. 



Char. Filaments smaller than those of M. intricatus. Cells 

 six or seven times as long as broad. Sporangia circular. 

 Sphcerocarpus recurvus Hassall, in Annals of Nat. Hist, 

 vol. xii. p. 186. plate 7. fig. 10. 



Hab. Penzance : Mr. Ralfs. Rackham Common : Mr. 

 Jenner. 



" This species I first received from Mr. Ralfs, and some 

 two or three weeks afterwards it was sent me by Mr. Jenner. 

 I regard, it however, as the species figured by Dillwyn (Sup- 

 plement, plate C.), as M. genuflexa in a state of repro- 

 duction." Annals. 



4. MESOCARPUS DEPRESSUS Hass. 



Plate XLIV. Fig. 1. 



Char. Filaments rather larger than those of Mesocarpus 

 recurvus. Cells six or seven times as long as broad. 

 Sporangia oval, small, their long diameter being placed in 

 the direction of the length of the cells. 



Sphcerocarpus depressus Hassall, in Annals of Nat. Hist, 

 vol. xii. p. 186. plate 7. fig. 11. 



Hab. In a boggy spot near Cross in Hand, opposite to 

 where the road branches to Hailsham : Mr. Jenner. 

 Penzance : Mr. Ralfs. 



" There can be no doubt of the distinctness of this species, 

 which was procured by Mr. Jenner, some weeks before it 

 was found and transmitted me by Mr. Ralfs." Annals. 



