«. 



142 CONMUGATE.E. 



6. Zygnema belle Hass, 



Char. Filaments about a foot in length, with truncate extre- 

 mities ; of considerable though rather less diameter than those 

 f^iG^ of Z. nitidum, mucous, glossy, and of a deep andbeantiful 

 *- / , green colour ; investing membrane of the cells very evident, 



iS^pl^ and transparent. Cells in the young filaments scarcely so 



{y^ J^Lxr^^J^^^'^^O ^^ broad, but their length exceeds their breadth in 

 '^^4*^jll\^' those ichich have conjugated ; round the interior of the cells 

 '^ i^^f^^'^jii^Q or six loose spiral tubes may he faintly discerned ; 

 r, these contain the reproductive globules ivhich are large, and 



iSS'S  distinct, ivith a dark central nucleus. Sporangia oval some- 



4~ j^ — times almost circular, and flattened, lying in inflated cells, 



'^.^^ * the cavity of ivhich they do not fill, 



^^^t^ Hassall, in Annals of Nat. Hist. vol. x. p. 37. 



Hab. Essex, Hertfordshire, and in several places in Mid- 

 '^'^, , dlesex ; abundant : A. H. H. In the pond between 



^' '^ - Ramslye Kocks and Broadwater Forest, and on Henfield 

 / ^ 'j^t Common : Mr. Jenner. 



Vt'^'^j-^r Tliis well-marked species is readily distinguished from all 

 Kr ' others by the size of its filaments, the sporangia almost cir- 

 ' _ '^cular, and the inflated form of the cells. There is not a more 

 distinct or attractive species in the genus. 



3/ v-^v-''^ ^-./•/«=^ ' 



^ l^2L. 7. Zygnema neglectum Hass. 



Plate XXIIT. Figs. 1, 2. 



Char. Filaments of less diameter than those of Z. nitidum. 

 Cells rather longer than broad. Spires distinct, serrated. 

 Granules large. Sporangia oval, in some specimens, occa- 

 sioning a slight inflation of the cells in which they are 

 lodged. 



Hassall, in Annals of Nat. Hist. vol. x. p. 37. 



Ilah. Neighbourhood of Cheshunt and other places ; com- 

 mon : A. II II. Vicinity of Tunbridge Wells and in 

 Kent : Mr. Jenner. 



This species has doubtless usually been confounded witli 



