48 PEOTOZOA [CH. II 



Sub-class II. TELOSPORIDIA. 



Fission and formation of spores confined to different periods of 

 the life history. 



Order 1. Gregarinidea. 



Forms which when adult emerge from protoplasm of their 

 hosts and lie free in their internal cavities. Gametes of same 

 size. The zygote forms only one spore. 



Ex. Monocystis, Clepsidrina. 

 Order 2. Coccidea. 



Forms which when adult remain within protoplasm of their 

 hosts. Gametes of different sizes. The zygote forms several 

 spores. 



Order 3. Haemosporidia. 



Forms inhabiting blood-cells of their hosts. Gametes of two 

 sizes. 



Ex. Laverania. 



