1014 



PARASITES OF PROTOZOA 



10-percent acid fuchsin, but were never absent from normal material. 

 Presumably the treatment had brought about detachment of many of 

 the bacteria. Generally these slender microorganisms appear homogene- 

 ous, but chromatic granules can be demonstrated by suitable methods. 

 Similar microorganisms have been found by the writer on three 

 of the five species of Caduceia. On C. nova and C. theobromae (Fig. 

 209C), they are short, slender, and are confined to a limited, sharply 

 bounded area at the posterior end of the body (Kirby, 1936, 1938a; 



Figure 209. Adherent microorganisms on flagellates of termites. A, Fusiformis-like 

 rods on Derescov'nia sp. from Glyptotertues n/ger; B, regularly arranged rods on Caduceia 

 sp. from Neotermes greeni ; C, investment of spirochaetes and posteriorly localized rods 

 on Caduceia theobromae. (A, B, original; C, after Grasse, 1938.) 



Grasse, 1937, 1938). On a species of Caduceia from Neotermes greeni, 

 they are abundant on the entire surface, except the papilla; and they 

 show a tendency to arrangement in transverse bands, between which, 

 in many specimens, there is regularity in spacing (Fig. 209B). 



On other genera of Devescovininae from termites, the striation-like 

 bacteria are altogether absent. None have been found in Foaina, on 

 most species of Metadevescovina, on Pseudodevescovina, or on Macro- 

 trichomonas, except for an occasional, irregular occurrence on the sur- 

 face, in a manner comparable to the situation in Crucinyinpha hilli. The 

 absence is the more striking because of their universality on Devescovina 

 and certain species of Caduceia. 



