78 ILLINOIS BIOLOGICAL MONOGRAPHS [78 



STYLOCYSTIS PRAECOX Leger Type species 



[Figure 33] 



1899 Stylocystis praecox Leger 1899: 529 



1903 Stylocystis praecox Minchin 1903: 199, 337 



1911 Stylocystis praecox Sokolow 1911: 283 



Sporonts solitary, elongate, maximum length 500/x, width not given. 

 Ratio LP:TL: :1:10. WP:WD: :1:1. Body cylindrical, somewhat dilated 

 in anterior end. Tapering slightly at posterior end, end blunt. Nucleus 

 spherical with one karyosome. Epimerite a slender recurved pointed 

 spine. 



Cysts elongate-ovoidal, 200/i in long axis. Spores biconical, 8 by 5/x. 



Intestine of Tanypus sp., larva. 



Taken at Grenoble, France. 



Genus TAENIOCYSTIS Leger 1906: 307 



Deutomerite of sporont divided by septa into numerous segments one 

 behind the other. Epimerite a small sphere set with six or eight recurved 

 hooks. Spores biconical. 



TAENIOCYSTIS MIRA Leger Type species 

 [Figures 34 and 35] 



1905' Leger 1905: ? 



1906 Taeniocystis mira Leger 1906: 307 



1908 Taeniocystis mira Leger and Duboscq 1908a: 105 

 1911 Taeniocystis mira Sokolow 1911: 284 

 1913 Taeniocystis mira Ellis 1913: 280 



Sporonts solitary, elongate cylindrical, deutomerite segmented, super- 

 ficially resembling a tapeworm. Length 400-500/x. Width not given. 

 Ratio LP:TL: :1:11. WP:WD: :1:1. Epimerite a relatively very small 

 bulb with a corona of 6 to 8 recurved hooks set upon a short neck. 



Cysts spherical, 130/Lt, spores 7 by 3/:. 



Host: Ceratopogon solstitialis Winn., larva. 



Taken at Cavaliere, France. 



Genus PILEOCEPHALUS Schneider 1875: 591 

 Epimerite a small lance-shaped or simple conoidal papilla placed 

 unstalked upon the protomerite. Spores biconical. 



PILEOCEPHALUS STRIATUS Leger and Duboscq 



[Figure 100] 



1909 Pileocephalus striatus Leger and Duboscq 1909b: 887 

 Sporonts solitary, length 150/i. Protomerite more or less hemispherical, 



deutomerite broad, obtusely pointed. Epimerite a long striated bulb 

 upon a short stout neck. Nucleus large, spherical, often found in the 



