257] 



STUDIES ON GREG ARINES —WATSON 



A7 



Genus 40. Acanthospora Leger 1892:145. Epimerite a 

 simple conical papilla. Spores biconical or 

 ovoidal with row of equatorial spines and a 

 tuft of four spines at each pole. 



Genus 41. Corycella Leger 1892:144. Epimerite globular 

 with 8 large recurved hooks. Spores biconi- 

 cal, 4 spines at each pole. 



Genus 42. Ancyrophora Leger 1892:146. Epimerite a 

 globule with 5 or 10 backwardly directed di- 

 gitiform processes. Spores biconical with 

 equatorial and polar spines. 



Genus 43. Cometoides Labbe 1899:29. Epimerite a spher- 

 ical button with long slender filaments. Spores 

 cylindro-biconical, with polar and two rows 

 of equatorial spines. 

 Family 6. Menosporidae Leger 1892:168. Sporonts solitary. 



Epimerite a large cup bordered with hooks and placed on 



a long slender collar. Cysts dehisce by simple rupture. 



Spores crescentic, smooth. 



Genus 44. Menospora Leger 1892:168. Characters of the 

 family. 

 Family 7. Stylocephalidae Ellis 1912:25. Sporonts solitary, 



epimerites varied. Nucleus ovoidal. Dehiscence by pseu- 

 docyst. Spores irregularly shaped, brown or black, in 



chains. 



Genus 45. Stylocephalus Ellis 1912:25. Epimerite a di- 

 lated papilla at end of a long slender neck. 

 Cyst covered with small papillae and indenta- 

 tions. Spores hat-shaped. 



Genus 46. Sphaerocystis Labbe 1899:32. Epimerite a 

 small sphere or ellipsoidal body at end of a 

 long slender neck. 



Genus 47. Lophocephalus Labbe 1899:31. Epimerite a 

 large sessile flattened crateriform disc, the 

 periphery crenulate and set at base with nu- 

 merous short upwardly directed digitiform 

 processes. Spores hat-shaped, black. 



Genus 48. Cystocephalus Schneider 1886:99. Epimerite a 

 large lance-shaped papilla set on a short stout 

 cylindrical collar. Spores irregularly shaped. 

 Family 8. Stenophoridae Leger and Duboscq 1904:361. De- 

 velopment intercellular. Sporonts solitary. 

 Epimerite absent or a simple structure. Cysts 

 dehisce by simple rupture. Spores ovoidal 

 with equatorial line. Not extruded in chains. 



Genus 49. Oocephalus Schneider 1886:101. Epimerite a 

 spherical button upon a short conical neck. 

 Spores not known. 



