338 
Oriental Sore 
nucleus to the blunter extremity of the body. There does not appear 
to be a true undulating membrane and the flagellum runs a fairly 
straight course over the surface of the flagellate. Dividing forms are 
shown at figs. 21, 24 and 26. In division the blepharoplast divides, a 
new flagellum is formed, after which nuclear divisions take place 
succeeded by division of the flagellate. Within the kinetonucleus there 
appears to be a karyosome which first divides as in the case of Herpeto- 
monas vmscae domesticae described above. A curious feature about this 
flagellate is the formation of small pear-shaped bodies (fig. 26) which 
may be stages in cyst formation. Actual cysts were not observed. 
The first step in this process is the formation of small stumpy forms 
(figs. 33, 34, 36), some of which resemble Trypanosoma nanum very 
closely. The stumpy forms have the kinetonucleus at the blunt ex¬ 
tremity of the body and they appear to arise by the gradual loss of the 
long tapering end of the long forms. The small forms then become 
doubled upon themselves (fig. 22), and finally the space between the two 
limbs is filled in and forms such as those shown at figs. 27, 29, 35 are 
produced, in which the flagellum follows a curious course through the 
body. Finally the body narrows and the small pear-shaped forms result 
(figs, 23, 31). It is possible that this flagellate also is some stage in the 
development of Herpetomonas muscae domesticae, but I have no facts on 
which to decide this point. 
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Basile, C. (1911). Sulla Leishmaniosi et sul suo modo di transmissioue. Rendi- 
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pp. 50-51 ; No. ill. p. 7. 
Brasil, L. (1905). Recherches sur la reproduction des Gregai’ines monocystidees. 
Arch. Zool. exp4r., Ser. iv. in. p. 17. 
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Christophers, S. R. (1906). Leueocytozoon canis. Sei. Mem. Officers Med. and 
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Christophers, S. R. and Stephens, J. W. W. (1908). The practical study of 
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nov. gen., nov. spec.). Quart. Journ. Microsc. Sci., LV. pp. 261-286. 
Dvk, L. (1905). Les Parasites des culicides. Arch, de Parasitologic, ix. pp. 5-77. 
Flu, P. C. (1908). Ueber die Flagellaten im Dann xon Melophagus ovinus. Arch. f. 
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