



28 COCCOPHYCE.E. 



cell, and as if on a common stipes, that is, as if all were ' in ramulis 

 qnaternatim conjunctee.' " The larger lower cells are com- 

 bined, inter se, by a soft irregular colourless furcated (almost as if 

 shrivelled) stalk, into a crowded colony or family. This branched cluster 

 of cells requires to be broken up and pressed out ere the arrangement 

 referred to can be seen. The structure and mode of arrangement of the 

 cells (which are bright green, with a pale narrow little space at the 

 upper extremity, and with large chlorophyll granules) becomes thus of 

 somewhat complex appearance, nor did it appear to have been made out 

 fully by Braun himself, as conveyed by his description. See Quart. 

 Journ. Micr. Science, 1872, pp. 195, 198. 



GENUS 21. MISCHOCOCCUS. Naff. (1849.) 



Thallus dichotomously branched, bearing the terminal cells. 

 Cells globose, terminal, gemmate or quaternate. Division of 

 cells in one direction. Propagation by zoogonidia. 



This genus is confined at present to a single species. 



IKEischococcus confezvicola. Nag. Einz. Alg. p. 82. 



Cells globose, even, geminate, ternate or quaternate, on the 

 tips of the branches, bright green, delicately granular, destitute 

 of a chlorophyllose vesicle ; stem hyaline, spuriously articulated, 

 often swollen at the angles. 



SIZE. Cells -0045--009 mm. (Rabh.). 



Rabh. Alg. iii. p. 54, fig. 29. 



Attached to filamentous Algse in ditches, near Stafford, 

 August, 1849 (Rev. R. C. Douglas). 



This interesting little plant is liable to be overlooked on account of its 

 small size and the delicate hyaline stem, only the pair, or more, of little 

 globose green cells being at first visible. 



Plate XL fi(j. 4. a, two plants parasitic on Conferva ; b, young 

 plants; c, terminal branches with 4 cells ; d, swollen joints of stem; e, 

 free cells. All magnified 400 diam. 



