12 ILLINOIS BIOLOGICAL MONOGRAPHS 112 



Family 6. Didymophyidae Le"ger 1892 :105. Sporonts in associations of two or 



three. No septum in satellites. 



Genus 19. Didymophyes Stein 1848:186. Epimerite a small pointed 

 papilla. Cysts spherical, dehiscence by simple rupture, 

 spores ellipsoidal. 

 Type: Didymophyes giganlea Stein. 



Family 7, Actinocephalidae L6ger 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. Protomerite cup-shaped, 



epimerite a globular sessile papilla. Spores curved. 

 Type: Amphoroides polydesmi (Le"ger) 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 Lger 1899:526. Epimerite a sharply recurved 



cone. Spores biconical. 

 Type: Stylocystis praecox L6ger. 



Genus 23. Discorhynchus Labbe" 1899:20. Epimerite a large globular 

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

 biconical, slightly curved. 

 Type: Discorhynchus truncatus (L6ger) Labbe. 



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.) Labbe". 



Genus 26. Sciadophora Labb6 1899:18 Epimerite a large sessile disc 

 with crenulate periphery. Protomerite with numerous 

 backwardly-directed vertical laminations. Spores biconical. 

 Type: Sciadophora phalangii (Leger) Labbd. 



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 ampJwrellus 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. 

 Type: Pyxinia rubecula Hamm. 



Genus 29. Schneideria Ledger 1892:153. Epimerite sessile, a thick hori- 

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

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

 biconical. 



