MORPHOLOGY AND TAXONOMY OF THE SPOROZOA 560 



Order 2. Actinomyxida ST0L9. 



With 2 spore membranes, outer trivalved, 



inner one piece Family 1. Haploactinomyxidae 



With only 1 membrane which is trivalved 



Family 2. Etjactinomyxidae 

 Family 1. Haploactinomyxidae Granata. 



One genus only Genus Tetractinomyxon Iked;i 



Family 2. Euactinomyxidae Granata. 



1 . Spore with posterior processes 2 



Spore rounded, no posterior processes .... 4 



2. Spores with 2 posterior processes. . .Genus Synactinomyxon Stole 

 Spores with 3 or 6 posterior processes .... 3 



3. Anchor-shape, with 3 posterior processes 



Genus Triactinomyxon Stole 

 Anchor-shape, with 6 posterior processes 



Genus Hexactinomyxon Stole 



4. Spores spherical Genus Sphaeractinomyxon 



Caullery and Mesnil 

 Spore globular; each valve swollen to 



hemisphere Genus Neoactinomyxon Granata 



Order 3. Microsporidia Balbiani. 



Spores with 1 polar capsule Sub-order 1. Monocnidea 



Spores with 2 polar capsules. . . .Sub-order 2. Dicnidea 



Sub-order 1. Monocnidea Leger and Hesse. 



J . Spores elongate, tubular or cylindrical 



Family 3. Mrazekiidak 



Spores spheroidal or ovoidal 2 



2. Spores oval to pyriform Family 1. Nosematidae 



Spores spheroidal Family 2. Coccosporidae 



Family 1. Nosematidae Labbe. 



1 . Sporont becomes a single sporoblast 2 



Sporont forms more than 1 sporoblast .... 3 



2. The single sporoblast form a single spore 



Genus Nosema Naegeli 

 The single sporoblast forms 2 spores . Genus Glugea Theloha n 



3. Each sporont forms 16 or more sporoblasts 4 

 Each sporont forms less than 16 sporo- 

 blasts 5 



4. Sixteen sporoblasts formed Genus Duboscqia Perez 



More than 16 sporoblasts formed. . .Genus Plistophora ( turley 



5. Sporonts produce 1, 2, 4 or 8 sporoblasts 



Genus Stempellia Leger and Hesse 

 Sporonts produce 4 or 8 sporoblasts 6 



6. Four sporoblasts produced Genus Gurleya Doflein 



Eight sporoblasts produced Genus Thelohania Henneguy 



Family 2. Coccosporidae Kudo. 



One genus only Genus Coccoaponi Kudo 



Family 3. Mrazekiidae Leger and Hesse. 



1. Spores straight or slightly bent 2 



Spores distinctly curved 3 



