452 PROTOZOOLOGY 



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

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

 thoracica (Coleoptera), 



Genus Cometoides Labb6. Epimerite globular with 6-15 long 

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



C. capitatus (L^ger) (Fig. 209, I, m). Sporadins up to 2 mm. long, 

 active; epimerite with 12-15 filaments, 32-35/i long; cysts 300/x in 

 diameter; spores 5,1^ by 2.5^^; in gut of larvae of Hydrous sp. (Coleop- 

 tera). 



Family 12 Actinocephalidae L^ger 



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. 209, n, o). Sporadins 1-1.5 mm. long; 

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

 4.5^4 by 2.8iu and 6.4/i by S.Qfj.; in gut of the coleopteran Silpha 

 laevigata. 



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

 112)U in diameter; spores spindle-form, 6-7.5ju by 3-3. 8^; 8 diploid 

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

 of larvae of dog-flea, Ctenocephalus canis. 



Genus Amphoroides Labbe. Epimerite a globular sessile papilla; 

 protomerite cup-shaped; spores curved; in myriapods. 



A. calverti (Crawley) (Fig. 209, p). Sporadins up to 1670m by 120^; 

 cysts spherical, 380/i 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. 209, g). Sporadins 300^-2 mm. long; 

 cysts and spores unknown; in gut of Nyctohates pennsylvanica. 



Genus Steinina Leger and Duboscq. Solitary; epimerite a short 

 motile digitiform process, changing into a flattened structure; spore 

 biconical ; in Coleoptera. 



S. rotunda Watson (Fig. 209, r). Sporadins 180-250/i long; in gut 

 of Amara augustaia (Coleoptera). 



Genus Pileocephalus Schneider. Epimerite lance-shaped, with a 

 short neck. 



