1016 PROCEEDINGS OF THE THIRD ENTOMOLOGICAL MEETING 



You can easily see the differences between these four sjiecies. L - 

 meichnikowi (figures 31-33) with the whole bod}^ covered with spiia 

 and flagella, L. minandalei (figures 34-3C) with its posterior glabrous 

 part, L. Icemfi (figures 37-38) with a tuft of cilia, in this glabrous part, 

 which are immobile and are more easUy tinged wth vital stains than 

 the other flagella, and L. camfannla, (figures 39-40) a species I have 

 characterized by the constancy of its morphology which remains always 

 the same in all stages of life of this j^rotozoon. 



Plate 169 gives place to some interesting remarks. One of the figures 

 of Leidy shows some spherical bodies that the American author consi- 

 dered to be masses of sfores. He makes also reference to the fact of 

 wood particles being sometimes surrounded in the body of Trichonympha 

 by a hyaline substance, and the protoplasm is in other cases stuffed with 

 round hyaline bodies. 



I have tried to study the constitution of the bodies contained in the 

 protoplasm of Trichonympha and arrived at these conclusions — 



(1) all the circular bodies found in the endoplasm of Trichonympha 



are identical with the circular bodies found free in the intes- 

 tine of the Termite ; 



(2) the circular bodies with an internal substance of more or less 



irregular form are wood particles surrounded by a kind of 

 hyaline secretion ; 



(3) circular bodies with an internal substance more or less nucleiform 



are Termite leucocyte.? or nuclei of Leidya that I have seen 

 being phagocyted on more than one occasion by the Tri- 

 chonympha ; 



(4) the circular hyaline bodies resembling fat drops which some- 



times fill the endoplasm of Trichonympha seem to me to be- 

 fat drops or divisional masses of the protoplasm of cells and 

 protozoa phagocyted by Trichonympha ; 



(5) some of the circular bodies that Leidy considered to be masses 



of spores are alimentary masses, well divided. Others 



. . . . — but I must firstly tell what I have observed. 

 Three times only, in more than 100,000 parasites, once in the body 

 of a Trichonympha , twice in that of Leidya, I have seen small spheres, 

 formed by a kind of rolled up thread (chromatic ?) and animated by such 

 a vertiginous circular movement that their parasitic nature could easily 

 be recognised. I saw nothing more than the vermicular stajge and the 

 sphseric stage, following one another and the divisional phenomena 

 that are represented in the Plate. The vermicular form pierces the 

 body of its host and moves freely in the ground imder the microscope. 

 I cannot say if this Trichonympha'^ parasite may constitute the evolutive 



