Synopsis of the Bacteria and Yeast Fungi. 



MONAS. 



The following species, placed under Monas, are con- 

 sidered by Warming to belong to the Schizomycetes : 



126. M. vinosa, Ehrenberg ("Die Infusionsthierchen," 



p. n). 



Chromatium violascens, Perty. 



Cells ovate, rounded at each end, very small, 2-4 p., of 

 a wine-red colour. Motion very slow and 

 ^ $ Q '/&'' tremulous. 



& @ Q % The form which Warming considers 



(fo &> jj identical with this is spherical or more 

 commonly oval, -5-4 /u, in length, pinkish- 

 red, granular, actively motile, with a 

 flagellum. (Fig. 81.) 

 In water containing decaying vegetable matter. 



Fig. 81. Monas -vi- 

 nosa(f)-X. 660 (after 

 Warming). 



127. M. Okenii, Ehrenberg (I.e., p. 15). 



Chromatium Weissii, Perty. 



Cells cylindrical, equal, slightly curved, abruptly rounded 

 at each end; 715 p- long, but, according to Warming, 

 much longer, 5 /*, broad, of a bright 

 red colour, motile; the granules are 

 pretty evenly distributed throughout 

 the body ; furnished with a flagellum, 

 in the large specimens one at each 

 end. Movements slow. (Fig. 82.) 



In stagnant water. According to 

 L. Olivier (Bull. Soc. Bot. France, 1882, 

 p. 216), M. Okenii, which Lankester 

 admitted to be one of the forms described by him under 

 Bacterium rubescens, is not a Schizomycete, but a true monad, 



Fig. 82. Monas Okenii, 

 X 660 (after Warming). 



