SPOROZOA, GREGARINIDA 451 



B. elongatus W. (Fig. 209, b). Sporadins up to 1.6 mm. by 50ai; 

 micleus diagonal; cysts and spores unknown; in gut of Cucujus larva 

 (a coleopteran). 



Genus Sphaerorhynchus Labbe. Epimerite a small sphere at end 

 of a long neck. 



S. ophioides (Schneider). Cephalins 1.3 mm. long; epimerite 220m 

 long; terminal part 8.5^; sporadins 3-4 mm. long; in gut of Ads sp. 



Genus Cystocephalus Schneider. Epimerite a large lance-shaped 

 papilla with a short neck; spore hat-shaped. 



C. algerianus S. (Fig. 209, c, d). Sporadins 3-4 mm. long; spores 

 10-10.5m long; in gut of Pimelia sp. 



Genus Lophocephalus Labbe. Epimerite sessile crateriform disc 

 with crenulate periphery, surrounded by digitiform processes. 



L. insignis (Schneider) (Fig. 209, e). Sporadins 1 mm. long; cysts 

 rounded; 430^ by 330^; pseudocysts; spores 10m long; in gut of 

 Helops striatus. 



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. 209, /). Sporadins polymorphic; up to 1 

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

 plasm yellowish brown; cyst 500-700m in diameter; spore with 6 

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

 Hydrous cerahoides. 



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

 biconical, with one row of polar spines. 



C. armata L. (Fig. 209, g, h). Sporadins 280-300m 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, with one row of spines at each pole. 



P. evansi E. CFig. 209, i). Sporadins broadly conical, 400m long; 

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

 spines at each pole, 11m by 5.8m; in gut of Tramea lacerta and Sym- 

 petrum ruhicundulum; Michigan. 



Genus Ancyrophora L^ger. Epimerite globular with 5-10 digiti- 

 form processes directed posteriorly; spores biconical, with spines. 



A. gracilis L. (Fig. 209, j, k). Sporadins 200m-2 mm. long; cysts 

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



