SPOROZOA, GREGARINIDA 555 



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

 conical. 



A. acutispora Leger (Fig. 236, n, o). Sporadins 1-1.5 mm. long; 

 cysts ovoid, 550-600/* by 280/*; spores, acutely pointed, of 2 sizes, 

 4.5/z by 2.8^ and 6.4/* by 3.6/*; in gut of the coleopteran Silpha 

 laevigata. 



A. parvus Wellmer. Sporadins 180/* by 50/*; cysts rounded, 62- 

 112/* in diameter; spores spindle-form, 6-7.5/* by 3-3. 8/*; 8 diploid 

 chromosomes; the first division in the zygote is meiotic; in the gut 

 of larvae of dog-flea, Ctenocephalus cams. Development (Weschen- 

 f elder, 1938). 



Genus Amphoroides Labbe. Epimerite a globular sessile papilla; 

 protomerite cup-shaped; spores curved; in myriapods. 



A. calverti (Crawley) (Fig. 236, p). Sporadins up to 1670/* by 120/*; 

 cysts spherical, 380/* in diameter; spores unknown; in gut of Callipus 

 lactarius. 



Genus Asterophora Leger. Epimerite a thick horizontal disc with 

 a milled border and a stout style projecting from center; spore cylin- 

 drobiconical; in Neuroptera and Coleoptera. 



A. philica (Leidy) (Fig. 236, q). Sporadins 300/*-2 mm. long; 

 cysts and spores unknown; in gut of Nyctobates pennsylvanica (Craw- 

 ley, 1903). 



Genus Steinina L£ger and Duboscq. Solitary; epimerite a short 

 motile digitiform process, changing into a flattened structure; spore 

 biconical; in Coleoptera (Leger and Duboscq, 1904). 



S. rotunda Watson (Fig. 236, r). Sporadins 180-250/* long; in gut 

 of Amara augustata (Coleoptera) (Watson, 1915). 



Genus Pileocephalus Schneider. Epimerite lance-shaped, with a 

 short neck. 



P. striatus Leger and Duboscq (Fig. 236, s). Sporadins 150/* long; 

 nucleus in protomerite; cysts spherical; in gut of larvae of Pty 'diop- 

 ter a contaminata. 



Genus Stylocystis Leger. Epimerite a sharply pointed, curved 

 process; spores biconical (Leger, 1899). 



S. praecox L. (Fig. 236, t). Sporadins up to 500/* long; cysts ovoidal, 

 200/* long; spores 8m by 5/* in gut of larval Tanypus sp. 



Genus Discorhynchus Labbe. Epimerite a large spheroidal papilla 

 with collar and short neck; spores biconical, slightly curved. 



D. truncatus (Leger) (Fig. 237, a, b). Sporadins 300/* long; cysts 

 spherical, 140/x in diameter; in gut of larvae of Sericostoma sp. 



Genus Anthorhynchus Labbe. Epimerite a large flattened fluted 

 disc; spores biconical, chained laterally. 



