PROCEEDINGS OF THE TIIIRU ENTOMOLOGICAL MEETING iHlT 



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

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

 discoui-agingly 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 

 Infusorians. 



In protozoological literature I have found only three parasitic genera 

 of Protozoa : Metclinikoirella , C'auU and Mesn. 1897, a parasite of Grega- 

 rines ; T/yaZosaccj/s, Keppene 1899, u parasite of Diroflagellate.s ; and 

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

 Gregarine of Blaps mortisaga. M}' i^arasite has no similarity with these 

 genera and has been provisionally named Enchelysfheroides trichoirym- 

 fharum (figure 41), This plate shows also three new* species of para- 

 sites of Leiicotermes indicola, belonging to the Infusoria : Opalina termitis 

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

 Nyctotherus fletcheri (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 N. termitis (figure 50) in Calotermes militaris 

 from Ce3don and my species of Nyctotkeri/s to which I have associated 

 the name of Bainbrigge Fletcher difiers 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 Pyrsonytnpha grassii, n. sp.* (figure 

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

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

 nowadays a tendency to consider the genus Pyrsonympha 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- 

 phidaB with the following characteristics.: flagella dispcsed in spiral 

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

 contractile vacuoles, ellipsoidal monaxomic body, aspnmetric poles, 

 locomotion bv 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 " Os parasitas multiciliados 

 do caria na India Portuguesa " in BoWuH dp AgricuHura, Aim I, No. ?, pp. 131 — 147 

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

 Editor. 



