12 ILLINOIS BIOLOGICAL MONOGRAPHS [12 



Family 6. Didymophyidae L6ger 1892:105. Sporonts in associations of two or 

 three. No septum in satellites. 



Genus 19. Did>Tnophyes Stein 1848:186. Epimerite a small pointed 

 papilla. Cysts spherical, dehiscence by simple rupture, 

 spores ellipsoidal. 



Type : Didymophyes gigantea Stein. 



Family 7. Actinocephalidae Leger 1892:166. Sporonts solitary, epimerites 

 complex and varied. Cyst dehiscence by simple rupture, 

 spores irregular, biconical, or cylindro-biconical. (Practi- 

 cally confined to insects.) 



Genus 20. Amphoroides Labbe 1899:20. Protorperite cup-shaped, 

 epimerite a globular sessile papilla. Spores curved. 



Type: Amphoroides polydesmi (Leger) Labbe. 



Genus 21. Pileocephalus Schneider 1875:591. Epimerite a lance-shaped 

 cone on a short neck. Spores biconical. 



Type: Pileocephalus chinensis Schn. 



Genus 22. Stylocystis Leger 1899:526. Epimerite a sharply recurved 

 cone. Spores biconical. 

 Type: Stylocystis praecox Leger. 



Genus 23. Discorhjmchus Labb6 1899:20. Epimerite a large globular 

 papilla with a thin collar at the base, neck short. Spores 

 biconical, slightly curved. 

 Type: Discorhynchus truncalus (Leger) Labb6. 



Genus 24. Steinina Leger and Duboscq 1904:352. Epimerite a short 

 mobile digitiform process changing into a flattened disc. 

 Spores biconical. 

 Type: Steinina ovalis (Stein) L & D. 



Genus 25. Anthorhynchus Labbe 1899:19. Epimerite a large fluted 

 flattened disc. Spores biconical, extruded in chains 

 laterally. 

 Type: Anthorhynchus sophiae (Schn.) Labb^. 



Genus 26. Sciadophora Labbe 1899:18 Epimerite a large sessile disc 

 with crenulate periphery. Protomerite with numerous 

 backwardly-directed vertical laminations. Spores biconical. 

 Type: Sciadophora phalangii (Ldger) Labb6. 



Genus 27. Amphorocephalus Ellis 1913:462. Epimerite a sessile peri- 

 pherally fluted disc set upon a short dilated neck. Proto- 

 merite constricted superficially across middle. (Spores 

 unknown.) 

 Type: Amphorocephalus amphorcllus Ellis. 

 Genus 28. Pyxinia Hammerschmidt 1838:357. Epimerite a flat crenulate 

 crateriform disc from the center of which rises a long or 

 short style. Spores biconical. 

 Tjrpe: Pyxinia rubecula Hamm. 



Genus 29. Schneideria L^ger 1892:153. EpiAerite sessile, a thick hori- 

 zontal disc with milled border, from center of which pro- 

 jects up a short style. No protomerite in adults. Spores 

 biconical. 



