10 ILLINOIS BIOLOGICAL MONOGRAPHS [10 



CLASSIFICATION OF THE TRIBE CEPHALINA 



WITH THE TYPE SPECIES 

 Order 1. Gregarinoidea Minchin 1912. 

 Suborder 1. Eugregarinae Le"ger 1900. 



Tribe 1. Cephalina Delage and HSrouard 1896 (Intestinal parasites almost ex- 

 clusively). 

 Family 1. Lecudinidae Kamm 1922. Non-septate gregarines inhabiting 



digestive tract of polychaetes. Epimerite a simple knob. 

 Genus 1. Lecudina Mingazzini 1891:469. Non-septate, epimerite simple, 



spores ovoidal with thickening at one pole. 

 Type: Lecudina pdlucida (Kolliker) Mingazzini. 

 Family 2. Polyrhabdinidae Kamm 1922. Septate gregarines inhabiting the 



digestive tract of polychaetes. Epimerites varied. 



Genus 2. Polyrhabdina Mingazzini 1891 :229. Septate, sporonts flattened, 

 ovoidal, epimerte a corona of hooks. Intestine of poly- 

 chaetes of the family Spionidae. 

 Type species: Polyrhabdina spionis (Koll.) Ming. 



Genus 3. Sycia LSger 1892:52. Epimerite knobbed, bordered by a thick 

 ring. Protomerite subspherical, deutomerite conical with 

 many inclosures in adult. 

 Type: Sycia inopinata Lger. 

 Genus 4. Ulivina Mingazzini 1891: 235. Elongate-ellipsoidal, protomerite 



the more dense. 

 Type: Ulivina elliptica Ming. 



Family 3. Cephaloidophoridae Kamm 1922. Sporonts associated in twos, 



no epimerite. Development intracellular; cyst dehiscence 



by simple rupture, spores ovoidal with equatorial line. 



Parasites of Crustacea. 



Genus 5. Cephaloidophora Mawrodiadi 1908:101. Characters of the 



family. 



Type: Cephaloidophora communis Mawrodiadi. 



Family 4. Stenophoridae Lger and Duboscq 1904:361. Sporonts solitary, 

 epimerite absent or rudimentary. Development intracellu- 

 lar; cyst dehiscence by simple rupture, spores ovoidal with 

 equatorial line. Confined to Diplopods. 

 Genus 6. Stenophora Labb 1899: 15. Characters of the family. 



Type: Stenophora juli (Frantz.) Schn. 



Genus 7. Fonsecaia.Pinto 1918: ? Like type genus except spores elongate- 

 ellipsoidal, no endospore. 

 Type: Fonsecaia polymorpha Pinto. 



Family 5. Gregarinidae Labb6 1899:9. Epimerite symmetrical, simple. 

 Sporonts solitary or in association. Cysts with or without 

 spore-ducts, spores symmetrical. (Confined to insects with 

 two exceptions, development extracellular.) 



Genus 8. Leidyana Watson 1915:35. Sporonts solitary, epimerite a 

 simple sessile knob. Dehiscence by spore-ducts. Spores 

 barrel-shaped, in chains. 

 Type: Leidyana erratica (Crawl.) Wats. 



Remarks in parenthesis are added by the writer. 



