, r 



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D 



Fig. 2. (a) Spirochata balbianii (Certes). The membrane (niemb.') with its nearly longi- 

 tudinally arranged myoneme fibrils and thickened chromatic border (chr. border) is 

 clearly indicated. A basal granule (.b.g.) occurs at each end of the parasite, and the 

 transverse bars in the body are composed of chromatin and are portions of the nuclear 

 apparatus. Some myoneme fibrils (jny.) are also seen on the periplast of the body. 

 (After Fantham [5].) 



(b) Spirochata anodontce (Keysselitz), showing numerous sinuosities in the outline 

 of the body and pointed ends with basal granules [fi.g.). The spiral winding of 

 the membrane is clearly shown, also the transversely arranged chromatin rodlets. 

 (After Fantham.) 



(c) SpirochcBta balbianii, early division stage. The membrane has divided longi- 

 tudinally, and each portion of the divided membrane has its own set of myoneme 

 fibrils. The chromatin is in the form of a spiral or helix, especially well-marked in 

 the middle portion of the body. Two basal granules, indicating division, occur at 

 each end. (After Fantham.) 



(d) Spirochczta balbianii, showing longitudinal fission, as in the last figure, but the 

 approximately longitudinal arrangement of the myonemes is well shown. (After 

 Fantham.) 



(e) Spirochtzta balbianii, late division stage, the daughter forms being still attached 

 at one end. (After Fantham.) 



