5^4 
:T 
f 
o- 
f 
.r, 
>; 
Plath  XX 
Fig.  1 8. — Conglomerate  of  Her petomonas-\\\^t  forms. 
Figs.  ig-^o.—  Herpetomonas-XW^e  forms. 
Fig.  31.  -Formation  of  round  form. 
Figs,  32-36. — Round  forms. 
