440 THE PARASITES OF THE TERMITES. 



clear globules may be seen, which are probably vacuoles. Usually a nucleus could 

 not be detected, but on dissolution of the animal one becomes more or less evident 

 in the forepart of the body. 



Dineni/mp/ia is everywhere closely invested with short, rapidly- vibrating cils; 

 distinctly obvious along the outline of the body. In many instances individuals 

 appear with the head end furnished with a sort of crest, or radiant fascicle of 

 longer cils, as represented in Figs. 25, 26. In most cases the crest was not obvi- 

 ous, and when present I have suspected that perhaps it was illusory, and due to 

 the temporary adherence of Vibrios, which occur as an abundant associate of the 

 animal parasite. 



Dinenympha is an active creature incessantly in motion, though like its associates 

 it remains nearly or quite stationary in position. It always appears twisted, or pre- 

 sents from one to three spiral turns on its long axis, so that it seems to be in con- 

 stant rotation, while it writhes about and alternately elongates and shortens. The 

 anterior end also bends in one and then in another direction, and is often alter- 

 nately somewhat projected and withdrawn. Sometimes the animal slowly advances 

 in a shuffling manner, alternately inclining from side to side. In its apparent rotary 

 movement the longitudinal strise of the body become more or less pronounced, and 

 at the lateral borders of the turns of the spiral induce a dentated appearance. 

 Dinenym'pha ranges from 0.045 mm. to 0.096 mm. in length by 0.006 mm. to 

 0.012 mm. in breadth. 



On one occasion only in a single Termite I observed numerous Dinenymphce, 

 in which the body contained a variable number of comparatively large, spore-like 

 bodies, as represented in Fig. 22. They were oval, darkly outlined, translucent, 

 homogeneous, oil-like in appearance, and measured about 0.006 mm. by 0.0045 

 mm. Usually there were two or three, but ranged from one to five or more. A 

 number together always formed a single row, and they appeared flattened at the 

 points of contact. 



These bodies I supposed might be spores or reproductive bodies of the Dine- 

 nympha, but I also observed a number of the young Trichonympha, as represented 

 in Fig. 21, PI. 51, containing variable numbers of the same kind of bodies. 

 Nevertheless these may be spores of the Dinenympha, which after expulsion had 

 been swallowed by the Trichonympha. It has further occurred to me that they 

 might be spores of some parasite of the parasites named. 



Occasionally I have observed a nucleus in Dinenympha, occupying a nearly 

 central position. 



