44 



ILLINOIS BIOLOGICAL MONOGRAPHS 



[254 



Genus 5. Cnemidospora Schneider 1882:446. Solitary. 

 Epimerite not known. Anterior half of pro- 

 tomerite gray, posterior half yellow-green. 

 Dehiscence of cysts by simple rupture. Spores 

 ellipsoidal. 

 Genus 6. Euspora Schneider 1875:582. Biassociative. 

 Epimerite not known. Cysts dehisce by sim- 

 ple rupture. Spores prismatic. 

 Genus 7. Sphaerocystis Leger 1892:115. Protomerite 

 only in young stages. Solitary, subsphericaL 

 Dehiscence by simple rupture. Spores ovoidal. 

 Genus 8. Gamocystis Schneider 1875 -S^?- Protomerite 

 only in young stages. Associative. Sporula- 

 tion partial, with spore ducts. Spores cylin- 

 drical. 

 Genus 9. Frenzelina Leger and Duboscq 1907 :773. (Cepha- 

 loidophora Mawrodiadi 1908:101). Biasso- 

 ciative. Epimerite not known. Cysts de- 

 hisce by simple rupture. Spores ovoidal, with 

 dark equatorial line. Intercellular develop- 

 ment. 

 Genus 10. Uradiophora Mercier 1912:198. B"i- or tri- 

 associative. Epimerite simple stj-le, forked at 

 end. Cysts dehisce by simple rupture. Spores 

 dolioform. 

 Genus 11. Leidyana Watson 1915. Solitary. Epimerite a 

 simple globular sessile knob. Dehiscence by 

 spore ducts. Spores dolioform. 

 Family 3. Dact>-lophoridae Leger 1892:165. Epimerite com- 

 plex.. Sporonts solitary. Cysts dehisce with lateral pseu- 

 docyst or by simple rupture. Spores elongate, cylindrical 

 or ellipsoidal. 



Genus 12. Dact>-lophorus Balbiani 1889:41. Protomerite 

 dilated laterally with peripheral digitiform 

 processes. Sporonts solitary. Spores in 

 chains obliquely. 

 Genus 13. Nina Grebnecki 1873: — . Protomerite formed 

 of two long narrow horizontal lobes fused and 

 upturned spirally at one end. Periphery set 

 with teeth from which project long slender 

 filaments. Spores in chains obliquely. 

 Genus 14. Trichorh5Tichus Schneider 1882:438. Epime- 

 rite a very long slender neck with dilation on 

 surface. Lateral pseudocyst for dehiscence. 

 Spores cylindrical or ellipsoidal, not in chains. 



