492 



TELOSPORIDIA 



B. Cytoplasm easily visible 



I. Schizogony known:— 



(a) Large pear-shaped solitary forms. Numerous 



merozoit es — A chromaticus . 

 (h) Small oval or pear-shaped forms, often in pairs, 

 30-100 merozoites — Rangelia. 

 II. Schizogony unknown: — 



(a) Division in pairs — Piroplasma. 

 {b) Division in fours: — 



1. Nucleus without dimorphism — - 



(a) Pear-shaped swollen parasites occupying 

 the whole breadth of the corpuscle — 

 Smithia . 



(B)^Small oval forms, no bacillary forms — - 



Nuttallia. 

 (c) Bacillary forms — Theileria. 



2. Nucleus with dimorphism— Mco//^^. 



C. Cytoplasm usually invisible :■ — • 



I. Coccus-like bodies found in animals — -Anaplasma. 

 II. Rounded and rod-like bodies: — 



Extremity small, and found in man in Oroya fever — • 

 Bartonella. 



Genus Piroplasma Patton, 1895. 



Synonyms. — Hcematococcus Babes, 1888 {non Agardh) ; Pyrosoma 

 Smith and Kilborne, 1893 (non Peron); Ixodioplasma Schmidt, 1904; 

 Apiosoma Von^Wandollek, 1875 [non Blanchard,^i855); Babesia 

 Starcovici, 1893; Amoebosporidiiim^onom^, 1895. 



Definition. — 'Piroplasmidae living inside red cells, without volu- 

 minous, but with easily visible, cytoplasm, not possessing any pig- 

 ment, and multiplying by division. 



Type S^QQiQS— Piroplasma bovis (Babes, 1888). 



Classification. — There are a number of species. 



A. In bovines : — ■ 



1. P. bovis (Babes, 1888), spread by Bodphilus annulatus, 



B. australis, and B. decolor atus — -America, Australia, 

 Asia, and Africa, 



2. P. divergens MacFadyean and Stockman, spread by 



Ixodes ricimts — Europe. * 



B. In sheep : — 



3. P. ovis Starcovici, 1893, spread by Rhipicephalus bursa — 



Europe. 



C. In dogs : — 



4. P. canis Plana and Galli-Valerio, 1895, spread by 



Rhipicephalus sanguineus — everywhere . 



D. In horses : — 



5. P. caballi Nuttall, 1910 — Europe. 



