67] STUDIES ON GREGARINES—KAMM 67 



Sporonts solitary, almost rectangular. Length 300/i, width not given. 

 Ratio LP:TL: :1:4; WP:WD: :1.2 : 1. Protomerite irregularly rounded, 

 bluntly conoidal at apex, widest at mid-portion. Constriction at septum. 

 Protomerite wider than deutomerite. Deutomerite rectangular, in optical 

 section, flat at base. Epimerite a short stout neck with a large flattened 

 papilla at apex. Around the base of the papilla fits a much larger flattened 

 disc like a collar. Nucleus spherical, with several karyosomes. 



Cysts spherical, 140/li. Spores biconical, slightly crescentic. 



Taken in Poitou, France. 



Intestine of a neuropteran doubtfully identified as the larva of Seri- 

 costoma sp. 



Genus PILEOCEPHALUS Schneider 1875:591 



Epimerite a small lance-shaped or simple conoidal papilla placed un- 

 stalked upon the protomerite. Spores biconical. 



PILEOCEPHALUS CHINENSIS Schneider Type species 

 [Figures 17, 18, 93, and 94] 



1875 Pileocephalus chinensis Schneider 1875: 592 



1885 Pileocephalus chinensis Schneider 1885: 10 



1899 Pileocephalus chinensis Labb6 1899: 19 



1903 Pileocephalus chinensis Minchin 1903: 199, 335 



1911 Pileocephalus chinensis Wellmer 1911: 128 



1913 Pileocephalus chinensis Ellis 1913: 274 



Sporonts solitary, stout bodied, ovoidal. Measurements not given; 

 "... tou jours de taille assez petite ..." Ratio LP:TL: :1:5; WP: 

 WD: :1:1. Protomerite broadly rounded, apex pointed, slightly wider 

 than high. Constriction at septum. Deutomerite widest at shoulder, 

 tapering from thence and ending in a broad blunt extremity. Epimerite 

 a small unstalked papilla, conoidal at apex. Nucleus spherical. 



Cysts spherical, spores roughly triangular with long slender ends. 

 (Figs. 93, 94.) 



Taken near Paris. 



Intestine of Mystacides sp., larva. 



This species received its name from the character of the epimerite 

 concerning which Schneider says : 

 Epimerite triangulaire ou cordifonne en maniere de bonnet chinois .... 



The insect is also the host of Gregarina mystacidarum Frantzius, and 

 Schneider and Wellmer found associations of the parasite in the host 

 with the above described species. 



