398 



SPECIFIC MICRO-ORGANISMS 



Trypanoplasma Borreli. Laveran and Mesnil in 1901 de- 

 scribed this protozoon which occurs in the blood of various species 

 of fish. It resembles a trypanosome somewhat, but the blepharo- 

 plast is relatively large and from it two flagella originate, one 

 extending forward immediately as a free whip while the other 

 runs along the convex border, ensheathed in an undulating mem- 

 brane, and extends at the posterior end 

 as a free flagellum. Longitudinal divi- 

 sion takes place in the circulating blood. 

 Transmission seems to be accomplished 

 by means of leeches. T. cyprini and 

 T. guernei seem to be identical with T. 

 borreli, but they may prove to be dis- 

 tinct species. 



FIG. 1 68. Bodo lacertce. a, 

 Sketched from life; b, drawn from 

 a stained preparation. (From 

 Doflein after H artmann and 

 Prowazek.} 



FIG. 169. Trichomonas hominis from the 

 mouth. (From Doflein after Prowazek.) 



Bodo Lacertae. In the cloaca of various lizards a flagellate 

 is almost constantly found. It is 2 to 4^ wide and 6 to 12.5^ 

 long, lance-shaped and twisted at the posterior (pointed) end. 

 The nucleus is near the anterior end. At its side is a granule 

 resembling a blepharoplast and from this a thread extends to 

 the anterior end of the cell where it gives rise to two flagella. 



