Fig. 59. a. Clironiatium sp., Hendley-Gaffroi 

 Strain D. Polar monotrithoiis flagella. 



i 



; / S'-^ -' 



Fig. 60. a. Rhodopseudomonas palustris, NCIB 8252. Polar monotrichous 

 flagella. Some individuals of this strain had a subpolar flagellum. Mean fla- 

 gellar wavelength 1.58 microns. 



b. R. palustris, Hopkins Marine Station 2.1.1. This culture was very poorly 

 flagellated. Most flagellated individuals showed subpolar monotrichous coiled 

 flagella. The soma stained very lightly. Flagellar wavelength from 3 to 4 

 microns. 



c. R. gelatinosa, NCIB 8290. Polar monotrichous flagella of normal curva- 

 ture. This strain showed only polar flagella. Mean flagellar wavelength 1.63 

 microns. 



d,e. R.spheroides, NCIB 8253. Note the long wavelength of the flagella 

 and the lateral origin in d. Individuals with subpolar and lateral flagella were 

 as frequent in this strain as those with polar flagella. Flagellar wavelength 

 was 3 to 4 microns. 



145 



