98 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. II). 

 Chromatium violascens, Perty. 

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

 a wine-red colour. Motion very slow and 

 ® I Q ''W tremulous. 



to® •^■' The form which Warming considers 



(Si ^ W identical with this is spherical or more 

 Fig. z^.-Mona^ vi- commonly oval, -5-4 /a in length, pinkish- 

 kom(?)x 660 (after red, granular, actively motile, with a 

 Warming). flagellum. (Fig. 81.) 



In water containing decaying vegetable matter. 



127. M. Okenii, Ehrenberg (/.c, p. 15). 



Chromatium Weissii, Perty. 



Cells cylindrical, equal, slightly curved, abruptly rounded 



at each end; 7-^15 ju, 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 



Fig. %■!..— Monas Okenii, L. OHvier {Bull. Soc. Bot. France, 1882, 



X 660 (a ter Warming). ^ ^^g^^ ^ Okenii, which Lanlcester 



admitted to be one of the forms described by him under 

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



