MASTIGOPHORA 



417 



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 membrane, 



and extends at the posterior end as 

 a free flagellum. Longitudinal division 

 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 

 distinct species. 



Fig. 176. — Bodo lacertce. u, 

 Sketched from life; b, drawn from 

 a stained preparation. (From 

 Ddflein after H artmann and 

 Prowazek.) 



Pig. 177. — Trichomonas hominis from the 

 mouth. (From Doflein after Prowazek.) 



Bodo Lacertse.- — In the cloaca of various lizards" a flagellate 

 is almost constantly found. It is 2 to 4/* wide and 6 to 12.5/i 

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

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

 resembUng a blepharoplast and from this a thread extends to 

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



27 



