498 



TELOSPORIDIA 



binuria, haematuria, and bile in the urine^ and also blood in the motions. The 

 mortality is 50 per cent. 



The post-mortem shows oedema of the tissues, enlargement of the spleen, 

 inflammation of the liver, kidney, and bowels, in the last of which there may 

 be ulcers. 



The Pifoplasma is spread by the daughter adult tick developed from the 

 Eurhipicephalus bursa, which sucked the infected blood. It is inoculable 

 into other sheep. 



Piroplasma pitheci P. H. Ross, 1905. 



This organism caused piroplasmosis in a species of Cercopithecus from Kikuga, 

 in Uganda. 



The parasite is a non-pigmented , pear-shaped, oval, or round endocor- 

 puscular body, being i'5 ^ in diameter when round, and 3 by 2 /i, to 2*5 by 

 I "5 ^ in the pyriform shapes. It may be single, double, or in multiples of two, 

 four, eight, or sixteen. 



Nuttall and Graham-Smith have investigated the parasite carefully, and 

 conclude that it is a true Piroplasma, and multiplies in the same manner as 

 P. canis ; and they figure one body in a corpuscle very like the peculiar free 

 forms noted in P. canis. 



Ross tried inoculation into dogs twice, hut though one of the dogs showed 

 a temporary rise of temperature, the experiment failed. No ticks were found 

 on the monkeys, or in the box in which they lived. The disease causes fever, 

 and killed four out of twelve monkeys. 



Piroplasma muris Fantham, 1906. 

 P. muris causes a chronic disease in mice, in which it exists as pyriform 

 intracorpuscular parasites, singly and in pairs (as many as four and six have 

 been seen). The secondary mass of chromatin has not been observed, and 

 no typical dividing forms have yet been seen. 



Piroplasma cervi Fran9a and Borges, 1907. 

 This Piroplasma is found as bacillary and cross forms in the blood of Cervus 

 damd lj. Its development is not known. 



Piroplasma minense Yakimofi, 1909. 

 Found in Russia in hedgehogs, and spread by Dermatocentor reticulatus (?). 



Piroplasma aristotelis Denier, 1907. 

 This parasite is found in Cervus aristotelis in Annam. 



Genus Theileria Bettencourt, Fran9a, and Borges, 1907. 

 Synonym. — Lymphohcematocytozoon Meyer, 191 3. 



Definition. — Bacilliform or rod-shaped forms arranged at times in the form of 

 a cross. 



Type Species. — Theileria parva Theiler, 1903. 



Theileria parva Theiler, 1903. 



Synonyms. — Piroplasma theileri, Babesia parva Theiler, 1903 ; LymphohcBmato- 

 cytozodn parvum Meyer, 19 13. 



This is the cause of East Coast fever in cattle in Rhodesia, and is also found 

 in India and Japan. 



Parasite. — The parasite appears in the blood as minute bacillary forms 

 or as small rings, which later become larger, and give the typical pyriform 

 appearance, being frequently arranged in the form of a cross. Very large 

 forms, consisting of protoplasmic masses containing numerous chromatin 

 particles, may be found in the endothelial cells of the spleen and lymphatic 

 glands. 



Schizogony. — According to Gonder, the large multinucleated plasmodial 

 masses divide into minute merozoites, and lead to the breaking up of the 

 enclosing lymphocyte. The merozoites penetrate into another lymphocyte 



