324 



HANDBOOK OF PROTOZOOLOGY 



Telomyxa glugeiformis Leger and Hesse (Fig. 138, 3'). In the 

 fat body of the larva of Ephemera vulgata. The spore measures 

 6.5 microns by 4 microns. 



ORDER 4 HELICOSPORIDIA 



This order has been created to include the interesting organ- 

 ism, Helicosporidium, observed by Keilin. Although quite pe- 

 culiar in the structure of its spore, the organism seems to be 

 best placed in the Cnidosporidia, if it is a protozoan. 



Fig. 139 Diagram showing the probable development of Helicosporidia. 

 X about 1600. (After Keilin). 

 a-c, schizont and stages in schizogony; d, sporont (?); e, three stages in 

 formation of four-celled stage; f, hypothetical stage; g, young spore before the 

 spiral filament is formed; h, mature spore; i, j, opening of spore and liberation 

 of sporozoites. a-h, in living host larva; i, j, in dead host larva. 



