196 ILLINOIS BIOLOGICAL MONOGRAPHS [406 



GREGAEINA OVALIS (Crawley) Watson 



[Figures 156, 157] 



1903 Hirmocysiis ovalis Crawley 1903:50 



1913 Gregarina elaterae Ellis 1913b :270 



1916 Gregarina ovalis Watson (This paper) 



Sporonts cylindrical, 70/u, long, width not given. Ratio length pro- 

 tomerite : total length : : 1 : 4 ; width protomerite : width deutome- 

 rite : : 1 : 1.1 Protomerite hemispherical, widest at base. Slight con- 

 striction at septum. Deutomerite dilated at shoulder, cylindrical, end- 

 ing very bluntly. Endocyte dark brown. Anterior third of protomerite 

 free from granules. Nucleus not seen. 



Cyst and spores unknown. 



Taken at Wyncote, Pa. Host: Cucujidae larva ("doubtful det."). 

 Habitat : Intestine. 



This species is probably associative but adult sporonts have not 

 been found. The specimens illustrated are probably mature. The length 

 is less than in most adult gregarines. 



Ellis placed, the species and Crawley's Gregarina elaterae together 

 under the name of the latter. I have rather regarded the latter species 

 as a doubtful one and have left this gregarine under its original name 

 but questioning the correctness of the genus name. The species cannot 

 be assigned to the genus Gregarina without a question of doubt arising. 

 It is therefore placed with the uncertain species. 



GREGARINA COPTOTOMI nov. spec. 



[Figure 172] 



Host: Coptotomus interrogatus (Fab.), Location: Urbana, Illinois^ 

 November, 1914. 



Two hosts each contained one parasite in the intestine. 



The sporonts are solitary. In shape the body is elongate ellipsoidal. 

 The protomerite is cylindrical at the base with a broadly rounded coni- 

 cal apex; it is as wide as high and the widest part is just anterior to 

 the septum. There is no constriction at the septum. The deutomerite 

 is elongate ellipsoidal broadening rapidly from the septum and soon at- 

 taining its maximum width. It remains of the same width throughout 

 most of the length, terminating in a very broadly rounded blunt ex- 

 tremity. The endocyte is gray and not dense, for the nucleus is clearly 



