158 ILLINOIS BIOLOGICAL MONOGRAPHS [368 



LOPHOCEPHALUS INSIGNIS (Schneider) Labbe 



[Figures 110, 114, 161] 



1882 Lophorhynchus insignis 

 1885 Lophorhynchus insignis 

 1899 Lophocephalus insignis 



Lophocephalus : Sporonts solitary, very elongate. Length 1000/i. 

 Width not given. Ratio length protomerite : total length : : 1 : 15 ; 

 width protomerite : width deutomerite : : 1 : 1.3. Protomerite subglo- 

 bose, flattened, twice as wide as high, constriction at septum. Deutome- 

 rite cylindrical, widest at end of anterior third, flattened at posterior ex- 

 tremity. Nucleus of sporont spherical with one karyosome. Epimerite 

 a large flattened disc, depressed slightly in center, crenulate on periphery, 

 longitudinally striated and carrying at base a circle of very many short 

 upwardly directed digitiform processes. The cephalont which possesses 

 the circular disc-shaped epimerite spherical or nearly so. Its nucleus 

 with a coiled chromatin band. 



Cysts subspherical or subovoidal, 430 by 330/a in diameter, dehiscing 

 by pseudocyst. Spores extruded in chains, irregularly hat-shaped, 10/a 

 long. 



Taken at Tours, Indre-et-Loire, France. Host: Helops striatus. 

 Habitat : Intestine. 



OOCEPHALUS HISPANIJS Schneider 



1886 Oocephalus hispanus Schneider 1886:101 



1899 Oocephalus hispanus Labbe 1899:32 



Epimerite a sphere carried on a short conical neck. Host: Morica 

 sp. Habitat : Intestine. 



Ellis (1913b :282) includes this genus with Cystocephalus under the 

 name of the latter. The two genera are, however, distinct, having epi- 

 merites different in shape ; the former being globular, set on a short coni- 

 cal neck, the latter spade-shaped (in side view), i. e. dilated in middle 

 portion and conical at apical end, set on a short cylindrical slender 

 collar. 



