138 ILLINOIS BIOLOGICAL MONOGRAPHS [348 



sharply pointed extremity. Endocyte very dense. Nucleus small, 

 spherical. Cyst and spores unknown. 



Taken at Paris. Hosts: Ocypus olens (Mull.) (Staphylinus o.) larva 

 and adult ; Carabus auratus L. ; Carabus violaceus L. ; and Rhizotrogus 

 sp. Iv. Habitat: Intestine. 



Schneider mentions three varieties of this species: a) body regularly 

 lanceolate, epimerite persistent; b) body subspherical ; c) body ex- 

 tremely elongate. Pfeiffer found the species in Carabus violaceus L. 



ACTINOCEPHALUS DIGITATUS Schneider 



[Figure 66] 

 1875 Actinocephalus digitatus Schneider 1875:590 



Actinocephalus : Sporonts solitary, short, obese. Measurements 

 not given. Ratio length protomerite : total length : : 1 : 4.5. Ratio 

 width protomerite : width deutomerite : : 1 : 1.4. Protomerite dome- 

 shaped, widest in posterior half, width equal to height. Constriction 

 at septum. Deutomerite rather short, widest a short distance below 

 septum and tapering gradually to a sharp point. Nucleus small, spheri- 

 cal. Epimerite persistent, a globular structure surmounted by a rosette 

 of 8 to 10 recurved digitiform processes rounded at their extremities. 

 Cysts and spores unknown. 



Taken at Paris. Host: Cklaenius vestitus (Payk.). Habitat: 

 Intestine. 



Schneider says: 



"L' Actinocephalus Lucanus de Stein, provenant de la larva d'un Lucanus 

 parallelopipedus, est une espece fort voisine de celle-ci." 



ACTINOCEPHALUS ACUTISPORA Leger 

 [Figures 212, 213] 



1892 Actinocephalus acutispora Leger 1892:142 



1899 Actinocephalus acutispora Labbe 1899:26 



Actinocephalus : Sporonts solitary, length 1000 to 1500/x. Width not 

 given. Ratio length protomerite : total length : : 1 : 11 ; ratio width 

 protomerite : width deutomerite :: 1 : 1.4. Protomerite 1.5 times as 

 long as wide, cylindrical, rounded at the top and slightly dilated in 

 posterior fourth. Constriction at septum. Deutomerite very long and 



