SPOROZOA, GREGARINIDA 403 



spherical, 250^ in diameter; spores IS/x by 6.5iu; in gut of larva 

 of Gyrinus natator. 



Genus Prismatospora Ellis. Epimerite subglobular with 8 

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

 pole. 



P. evansi E. (Fig. 182, i). Sporadins broadly conical, 400m long; 

 cysts 370/i in diameter; wdthout sporoducts; spores with 6 long 

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

 petrum riihicundulum ; Michigan. 



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

 form processes directed posteriorly; spores biconical, with spines. 



A. gracilis L. (Fig. 182, j, k). Sporadins 200^-2 mm. long; cysts 

 spherical, 200^ 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). 



Genus Cometoides Labbe. Epimerite globular with 6-15 long 

 filaments; spores with polar spines and 2 rows of equatorial 

 spines. 



C. capitatus (Leger) (Fig. 182, 1, m). Sporadins up to 2 mm. long, 

 active; epimerite with 12-15 filaments, 32-35m long; cysts 300m 

 in diameter; spores 5.1m by 2.5m; in gut of larvae of Hydrous sp. 

 (Coleoptera). 



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 

 neck, with 8-10 simple digitiform processes at its apex; spores bi- 

 conical. 



A. acutispora Leger (Fig. 182, n, o). Sporadins 1-1.5 mm. long; 

 cysts ovoid. 550-600m by 280m; spores, acutely pointed, of 2 sizes, 

 4.5m by 2.8m and 6.4m by 3.6m; in gut of the coleopteran, Silpha 

 laevigata. 



Genus Amphoroides Labbe. Epimerite a globular sessile papil- 

 la; protomerite cup-shaped; spores curved; in myriapods. 



A. calverti (Crawley) (Fig. 182, p). Sporadins up to 1670m by 

 120m; cysts spherical, 380m in diameter; spores unknown; in gut of 

 Callipus lactarius. 



Genus Asterophora Leger. Epimerite a thick horizontal disc 



