365 
As in the case of trypanosomes, indifferent male (with 
large blepharoplast) and female (deeply staining) forms 
are described. Further, a developmental cycle occurs 
in certain leeches, e.g., Piscicola sp., with fertilisation, 
formination of ookinets, and development of three 
forms of trypanoplasmata out of these. As an example 
may be taken :— 
1. Tp. borreli .—Twenty p long, three to four ^ 
broad. Each flagellum, fifteen p long. It is curved in 
shape. The undulating membrane is on the convexity. 
The anterior end is more pointed than the posterior. 
Found in the blood of the rudd (Leuciscus erythroph- 
thalmus). Also a similar, if not identical, species in 
minnows (Phoxinus laevis). They may cause anaemia, 
wasting, and death of the fish (Fig. 112). 
Tp. abramidis in Abramis brama, Tp. truttae in Salmo fario , trout 
bream Tp. varium in Cobitis barbatula , 
Tp. barbi in Barbus fluviatilis loach 
Tp. guernei in Cottus gobio, Tp. cyprini in Cyprinus carpio , 
bull-head carp 
LITERATURE 
Laveran & Mesnil. Trypanosomes and trypanosomiasis. English 
Edition, 1907. Translated by D. Nabarro. 
