TRYPANOSOMA SIMILE 



557 



with ample justification that Martoglio was probably dealing with one or 

 both of these trypanosomes in pure or mixed infections. 



Stirling (1921) found a trypanosome in large numbers in the blood of 

 a bullock which had died in the Central Provinces of India. The try- 

 panosome was quite unlike T. evansi, measured 11 to 18 microns in length, 

 with an average of 14-5 microns, and had the characters of T. congolense. 

 Stirling concluded that it was actually T. congolense, of which this is the 

 first record outside Africa. In such a case there might have been some 

 grounds for the creation of a new species, but there are none whatever 

 for the name T. ruandce given by Van Saceghem (1921) to a trypanosome 

 of the Belgian Congo which is undoubtedly T. congolense. 



Trypanosoma simiae Bruce et al. 1912. -Synonyms: T. ignotum Kinghorn 

 and Yorke, 1912; Didtonella simice (Chalmers, 1918). 



This is a trypanosome which was discovered by Bruce et al. (1912) in 

 Nyasaland. What was probably the same trypanosome was also seen 

 later by Kinghorn and Yorke (19126) in Rhodesia. The latter observers 



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/ 



^^^^jx7 .^S^ f^ 



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Fig. 



230.^Trt/2mnosoma simice from Blood of Monkey (x 2,000). (After 

 Bruce, Harvey, Hamerton, and Lady Bruce, 1914.) 



isolated it by feeding wild G. morsitans on monkeys in the Luangwa 

 Valley, and, being unaware that it had already been named, called it 

 T. ignotutn. 



Morphologically T. simice resembles T. congolense, which has been 

 considered above, except that it is distinctly larger (Fig. 230, Plate V., g, 

 p. 456). Bruce et al. (1913rf) found that the trypanosome was remarkable 

 for its virulence to the monkey and domestic pig. Goats and sheep are 

 also susceptible, but other animals, including rats, mice, and guinea-pigs, 

 are refractory. It was noted that when a monkey and a goat are exposed 

 to bites of infected flies, both acquire an infection, but the monkey in such 



