106 
A New Qregarine 
emerge in chains two or three abi’east (Figs. 29, 30). These chains are 
excessively friable and it is impossible to pick them up without their 
breaking. 
The spore (Fig. 31) is a uniformly oval body measuring about 
*1 jxy. Sfx.. It is provided with a single covering or epispore which is 
highly retractile and slightly thickened at each pole. The interior is 
occupied by eight sporozoites closely packed together, each with a 
minute ring of chromatin, or nucleus. 
Fig. 28. Cyst showing rupture highly magnified. 
Fig. 29. Cyst discharging spores. 
Fig. 30. Fig. 31. 
Fig. 30. A spore chain. 
Fig. 31. A spore showing the rings of chromatin in the nuclei of sporozoites. 
p.m. 12.54 1.0 1.1 1.9 1.20 
Fig. 32. Sporozoites coming out of spore. 
When these spores are acted on by the gut juice of a flea-larva the 
eight sporozoites escape, leaving the empty spore case behind, and each 
of them may then undergo the same cycle of development which has 
been described above. I have seen the actual process taking place in 
the gut of a flea-larva: a spoi'e was watched which had doubtless been 
