Gr. H. F. Nuttall 
301 
Since three distinct kinds of blood-sucking insects are capable of 
transmitting T. lewisi it appears doubtful that this flagellate is a parasite 
of the invertebrate “host” in the sense claimed by Prowazek and other 
investigators. 
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MacNeal, W. J. (5. xi. 1904), The life history of Trypanosoma lewisi and Trypano¬ 
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