1016 I'EOCEEDIXGS OF THE THIRD ENTOMOLOGICAL MEETING 



Yoli can easih' see the differences between these four species. L. 

 7)ie(cJinikowi (figures 31-33) with the whole body covered with spiia 

 and flagella, L. cmvandalei (figures 34-36) with its posterior glabrous 

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

 which are immobile and are more easily tinged with vital stains than 

 the other flagella, and L. cam-pamda, (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 protozoon. 



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 1//0MTS of sjiores. He makes also reference to the fact of 

 wood particles being sometimes surrounded in the body of Trichonym/pha 

 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 Trichony^nqiha and arrived at these conclusions — 



(1) all the circular bodies found in the endoplnsm 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 surrnunded by a kind of 

 hyaline secretion ; 



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



are Termite leucocytes or nuclei of Leidya that I have seen 

 being phagocyted on more than one occasion by the Tri- 

 clioiiympJia ; 



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



times fill the endoplasm of Tn'chonyinpha seem to me to be 



fat drops or divisional masses of the protoplasm of cells and 



f)rotozoa phagocyted by Trichonyiv.fha ; 

 (•"i) 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 T tichonymjjho . twice in that of Leidya, I have seen small spheres, 

 formed by a kind of rolled ujj 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 staige and the 

 sphan-ic 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 under the microscope. 

 I cannot say if this Trichonymfluif. parasite may constitute the evolutive- 



