The actual conjugation is quite similar to the process in Coccidia, and the resulting zygote perfectly homologous.

ECTOSPORA, a homogeneous and natural division of Protozoan parasites included under the Sporozoa; they comprise the three orders, Gregarines, Coccidia and Haemosporidia.

But in many cases Coccidia are found in other organs, to which they are doubtless carried by lymphatic or circulatory channels.