PATHOGENIC PROTOZOA OF THE MASTIGOPHORA 



435 



a staring coat. In many individuals the lower surfaces of the 

 body show marked edema. The temperature is variable. The 

 disease generally lasts seven or eight months. 



Bacteriological Diagnosis. The organisms are present in the 

 blood, usually in small numbers only. 



oo 



Fig. 191. Trypanosoma cazalboui (Laveran). 



Transmission. Pecaud concludes that Glossinia palpalis is 

 responsible for the distant transmission of the organism, and that 

 members of the fly-genera Stomoxys and Tabanus may produce 

 immediate transmission. 



Trypanosoma theileri 



Disease Produced. Associated with galziekte or gall-sickness 

 in bovines. 



This organism was first noted by Theiler and was described 

 at greater length by Laveran. 



Distribution. A large part of South Africa, possibly also in 

 India. 



Morphology. The organism associated with this disease is of 

 unusual size, 30 to 70 u in length, and 2 to 5 fi in width. This 

 alone is sufficient to differentiate it from other forms. There 

 is a long, free flagellum. The nucleus is central, but the blepharo- 

 plast is a considerable distance from the posterior end. Many 

 protoplasmic granules may usually be seen. 



Pathogenesis. The organism seems to be inoculable only 



