TRANSACTIONS OF SECTION D* 



5, The Pharmacological Treatment of Trypanosomiasis, 

 By Professor B. Mooeb, 



74^ 



6. The Life-history of Trypanosomes in relation to the Diseases they produce. 

 By J. E. S. Moore and Dr. A. Breinl. 



T. gainhieuse undergoes a complete life-history in the animal organism. Tlie 

 life-history takes place in three phases— multiplication, then an inter-action between 

 nucleus and extranucleur centrosome, then the formation of latent bodies, i.e., 

 small round bodies with typical tryp-nucleus and vacuole. From this the new 

 generation of Trypanosomes develops. 



T. equiperdium undergoes a similar, somewhat modified, life-history. 



T. Lewisi develops in a somewhat similar way. 



The authors suggest that from the similarity of the life-history with the life- 

 hiatory of Crithidia described by Patton, Orithidia have a distinct relation to 

 Trypanosomes. 



7, Haimatozoa from some Ceylon Reptiles. 

 By Muriel Robertson, M.A. 



The parasites discussed in this paper were treated according to their occurrence 

 in the vertebrate host. 



Among tortoises Nicoria trijuga and Emyda vittata were very generally 

 found to be infected. Nicoria trijuga shows Hcemogregarina nicorice (Castellani 

 and Willey). Multiplication occurs in the vertebrate host. The transmitting 

 host is a water-leech, a species of Branchellion. The Hasmogregarines become 

 motile in the alimentary tract of the leech. 



Emyda vittata harbours Trypanosoma vittatce (Mihi) and Scemogregarina 

 vittatee (Mihi). The Trypanosome, both on the slide and in the alimentary tract 

 of the transmitting host, a species of Glnstiphonia, divides into four small flagellated 

 individuals with kinetonucleus anterior to trophonucleus. They ultimately develop 

 into slender Trypanoform organisms, the kinetonucleus lying generally immediately 

 in front of the trophonucleus. 



Hcemogregarina vittatm has two forms: (1) Broad massive form, showing 

 reticulate protoplasm and delicate loose nucleus ; the larger forms have two red- 

 staining plastid.(F)like bodies at one end. (2) Recurved form, with pale protoplasm 

 and dense nucleus; the two limbs are equally long. Schizogoues occur in the spleen 

 and liver ; eight reproductive bodies are formed ; these are enclosed in pairs in 

 a delicate boat- shaped capsule. Transmitting host apparently Glossiphonia, as 



above. . , , 



Among lizards, Hemidactylus lesehenaultii and H. tnedrm harbour a number 



of different parasites. 



//. lesehenaultii has four different species :^ 



1, Hcemogregarina lesehenaultii (Mihi). This shows two free motile forms 

 always present in the blood, and two endo -corpuscular forms. Schizogones occur 

 in the blood. Transmitting host not known. 



2. Trypanosoma lesehenaultii (Mihi), The size of this form varies very much. 

 Transmitting host not known. 



3. Trypanosoma pertenuis (Mihi). This trypanosome is also present in 

 Hemidactylus triedri ; it is a very delicate form with a small circular nucleus, 

 lying about half-way from the non-flagellate tip; the kinetonucleus is very 

 minute, and lies immediately behind the trophonucleus. 



4, Hcemocrystidiim Limojidi (Castellani and Willey), 190-4. 



