H. B. Fantham 
383 
periphery, and are extremely numerous and very small (Fig. 5, C). 
The protoplasm gathers around each nucleus, thus giving rise to a 
number of merozoites, irregularly arranged, and surrounding a mass 
of highly vacuolated, residual protoplasm (Fig. 5, D). Sporogony has 
never been seen, but it is probable that the uninucleate fonns are 
gametes. 
Fig. 5. Eleutheroschizon duboscqi, after Brasil (1906). 
A. Uninucleate schizont (trophozoite), fixed to the gut-epithelium of the host. 
chr = chromatic cap. 
B. Nucleus of schizont in process of division, the daughter nuclei situate on 
undulating cytoplasmic bands. 
C. Further stage in nuclear division. Protoplasmic bands more separated. 
Vacuoles present in residual protoplasm. 
D. Fully differentiated merozoites, lying near the periphery, away from the 
masses of highly vacuolated residual protoplasm. 
(3) Genus Schizoeystis. 
No figures have yet been published of Schizoeystis gregarinoides, 
of which an account has been given on p. 375. The absence of figures 
is unfortunate, but Leger, the discoverer of this interesting and unique 
organism, promises a paper thereon at an early date. Through the 
kindness of Professor Leger I have been able to examine some sketches 
of Schizoeystis. I was glad to note the likeness in body-form of the 
multinucleate trophozoite (schizont) to that of Siedleckia (Fig. 6). 
In each organism there is concurrent increase in the number of nuclei 
and in the size of the schizont. The merozoites, which are large, 
