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 : 



Fig. 112. T.soleae; T. avium ; T p. borreli 



I . Tp. borreli. Twenty ^ long, three to four ^ 

 broad. Each flagellum, fifteen n> 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 erythropb- 

 tbalmus). 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 Coitus gobio, Tp. cyprini in Cyprinus carpio, 

 bull-head carp 



LITERATURE 



Laveran & Mesnil. Trypanosomes and trypanosomiasis. English 

 Edition, 1907. Translated by D. Nabarro. 



