554 PROTOZOOLOGY 



Family 11 Acanthosporidae Leger 



Sporadins solitary; epimerite complex; cysts without sporoducts; 

 spores with equatorial and polar spines. 



Genus Acanthospora Leger. Epimerite simple conical knob; spores 

 with spines. 



A. polymorpha L. (Fig. 236, /). Sporadins polymorphic; up to 1 

 mm. long; protomerite cylindro-conical; deutomerite ovoidal; endo- 

 plasm yellowish brown; cyst 500-700m in diameter; spore with 4 

 spines at each pole and 6 at equatorial plane, 8m by 4.4m; in gut 

 of Hydrous ceraboides. 



Genus Corycella Leger. Epimerite globular, with 8 hooks; spores 

 biconical, with one row of polar spines (Leger, 1892). 



C. armata L. (Fig. 236, g, h). Sporadins 280-300/x long; cysts 

 spherical, 250m in diameter; spores 13m by 6.5m; in gut of larva of 

 Gyrinus natator. 



Genus Prismatospora Ellis. Epimerite subglobular with 8 lateral 

 hooks; spores hexagonal, prismatic with one row of spines at each 

 pole. 



P. evansi E. (Fig. 236, i). Sporadins broadly conical, 400m long; 

 cysts 370m in diameter; without sporoducts; spores with 6 long 

 spines at each pole, 1 1/x by 5.8m ; in gut of Tramea lacerta and Sym- 

 petrum rubicundulum; Michigan. 



Genus Ancyrophora Leger. Epimerite globular with 5-10 digiti- 

 form processes directed posteriorly; spores biconical, with spines. 



A. gracilis L. (Fig. 236, j, k). Sporadins 20G>-2 mm. long; cysts 

 spherical, 200m in diameter; spores hexagonal in optical section, 

 with 4 polar and 6 equatorial spines, 8.5m by 5m; in gut of larvae and 

 adults of Carabus auratus, C. violaceus, C. sp., and of larvae of Silpha 

 thoracica (Coleoptera) (Leger, 1892). 



Genus Cometoides Labbe. Epimerite globular with 6-15 long 

 filaments; spores with polar spines and 2 rows of equatorial spines. 



C. capitatus (Leger) (Fig. 236, I, m). Sporadins up to 2 mm. long, 

 active; epimerite with 12-15 filaments, 32-35/* long; cysts 30% in 

 diameter; spores 5.1m by 2.5/*; in gut of larvae of Hydrous sp. (Coleop- 

 tera) (Watson, 1916). 



Family 12 Actinocephalidae Leger 



Sporadins solitary; epimerite variously formed; cysts without 

 sporoducts; spores irregular, biconical or cylindro-biconical; in gut 

 of insects. 



Genus Actinocephalus Stein. Epimerite sessile or with a short 



