PEOCEEDINGS OF THE THIRD ENTOMOLOGICAL MIEETING 1017 



stage of some sporozoon and if what I observed belongs only to the . 

 sexual (male) element of this sjDorozoon. But as these elements are so 

 discouragingly rare, I believe it will not be devoid of interest to call 

 the attention of protozoologists to them, creating a new provisional 

 genus Enchelyspheroides, whose etymology comprises both the stages. 

 I have observed. I will be glad if others are more fortunate than 

 myself in being able to study the whole evolution of the parasite. I 

 must add that these bodies have nothing to do with the trichocysts of 

 Infusoriaus. 



In protozoologieal literature I have found only three parasitic genera 

 of Protozoa : Metchnikotcella, Caull and Mesn. 1897, a parasite of Grega- 

 rines ; Hyalosaccus, Keppene 1899, a parasite of Dinoflagellates ; and 

 Chitridyopsis, Aim. Schn., a parasite of the intestinal cells and of the 

 Gregarine of Blaps mortisaga. My parasite has no similarity with these 

 genera and has been provisionally named EncJielyspieroides trichomjm- 

 fJuirum (figure 41). This plate shows also three new* species of para- 

 sites of Leucotennes indicola, belonging to the Infusoria : Opalina iermitis 

 and its divisions (figures 45-47), Balantidium termitis (figure 42) and 

 Nyctotherus flelcheri (figures 48-49), well known genera upon which I 

 will not make further remarks : I must only say that Dobell was in 

 1910 the first to describe his iV. termitis (figure 50) in Cahtenues militaris 

 from Ceylon and my species of Nyctotherus to which I have associated 

 the name of Bainbrigge Fletcher differs from that of Dobell not only 

 by its size but also by the form of the meganucleus and the situation 

 of the micronucleus. 



You see in the same plate two figures more, about which I must 

 give some explanations : one is my Pyrsonympha grassii, n. sp.* (figure 

 43) of Leucotermes indicola, the other is Grassi's P. flagellafa (figure 44), 

 parasite of L. lucifugus of Italy, reproduced for comparison. There is 

 nowadays a tendency to consider the genus Pyrsony^npha as synonymous 

 with Dinenympha and this comes from the fact that Leidy described 

 under the name P. vertens not only this species but also some stages 

 of Dinenympha gracilis. In 1893 Grassi created the family Pyrsonym- 

 phidse with the following characteristics : flagella disposed in spiral 

 lines, nucleus on the anterior extremity, no micronucleus, mouth or 

 contractile vacuoles, elHpsoidal monaxomic body, aspnmetric poles, 

 locomotion by helicoidal movements. 



* Although referred to as new species in this paper. Captain Froilano de Mello has 

 published descriptions of these novelties in a paper entitled " Osparasitas multiciliados 

 do oaria na India Portuguesa " in BoZe^jw rie Agricuttura, kao 1, No. 2, pp. 131 — 147 

 (Nova Goa ; April 1919) and this publication has precedence of the present paper. — 

 Editor. 



