2g8 
V, ii -8 /m; VI, 37 fi. Total length, 49 /i. A perfect flagellum was 
seen only in one parasite (fig. 29). In fig. 30 the flagellum is much 
shorter; the greater breadth of this parasite is probably due to its 
being slightly flattened. 
The blepharoplast is a very darkly-staining oblong King longi¬ 
tudinally in the parasite and placed just posterior to an ill-marked 
vacuole. It obviously consists of a collection of four or more granules. 
The flagellum, after forming the thickened edge of a wide (1-5/1), 
ample, lilac-staining undulating membrane, ends in one instance 
(fig- 3°) in a small carmine-coloured, possibly bi-lobed, expansion, 
in immediate apposition to the blepharoplast. The granular, palely 
staining nucleus measures about 2 by i'3/x, and lies in a sharply- 
defined palely-staining area (3 by 2'$n), situated rather posterior to 
the middle of the body of the parasite. In one instance a dark 
karyosome-like granule, lying in the clear space, is placed do>e 
to the nucleus. The nucleus is obscured by the striations of the 
body, and it is seen with great difficulty. The finely-aheol r 
body cytoplasm is striated through almost its whole length Tin 
much-pointed posterior extremity (especially in fig. 29) is very 
lightly 
the finely-drawn-out, darkly-stained anterior 
At the level 
stained. Here, as in 
extremity of the body, striation can not be detected. - . 
of the nucleus about eight, more or less, light striations (my° nenie ^ 
can be distinguished running longitudinally. Ordinarily (hff ' C,! ^ 
striae are placed at equal distances. In fig. 30 they are so ^ 
arrange 
• disp 05 
as to make the cytoplasm appear to be arranged in dark stria 6 c 1S P ^ 
in pairs.* By careful examination of fig. 30, it was thought d ia 
pairs could be distinguished. 
The irregular clear areas in the cytoplasm, as illustrated (^ f {0 
thon£ ht 
30), occur in the majority of the parasites. They are not -- 
be artefacts. They seem to be non-staining, refractile gran ll ' eS r 
than vacuoles. 
The periplast does not stain as pinkly as is usual in tryP an °^j 0 pe 
but it can, nevertheless, be distinguished as a clear refracti' e en 
about the body of the parasite. 
ox-* C ,° mpare With the m y° nem es in the motile forms of the mikrog* 111 ^ 0 
■5-pirochcEta ziemanni. 
