60 ILLINOIS BIOLOGICAL MONOGRAPHS [270 



end to end. Deutomerite elongate cylindrical, broadest just below sep- 

 tum where it attains one and a fourth times the maximum width of the 

 protomerite. Slighly wider in anterior third than elsewhere, tapering 

 slightly and terminating bluntly. Endocyte opaque in both protomerite 

 and deutomerite. Nucleus undescribed, not visible in vivo. Cysts spheri- 

 cal, 350 to 500/A in diameter with thick epicyst. Dehiscence by rupture, 

 spores fusiform, 12.5 by 7.5/t. 



Taken at Ealeigh, N. C. Host Spirololus sp. Habitat: Intestine ( ?). 



Crawley first described this species as Stenophora spiroboli, trans- 

 ferring it later to the genus Cnemidospora when the cyst and spores had 

 been examined, probably because of the character of the spore-integu- 

 ment. The genus Cnemidospora Schn. (1882:446-7) is diagnosed thus: 



Protomerite subglobular, divided into two parts, the upper greenish gray, 

 the lower yellow to brown ; deutomerite elongate, cylindrical, spores ellipsoidal 

 (nearly spherical) with a thick integument. No spore ducts in cyst. 



The species in question does not coincide with the characters of the 

 genus Cnemidospora. Neither the coloration of the protomerite nor the 

 shape of the spores fits the generic description. 



Ellis has replaced the species in the originally assigned genus, where 

 it undoubtedly belongs because of the form and coloration of the spo- 

 ronts, the character of the cyst dehiscence, and the shape of the spores. 



STENOPHORA FONTABIA (Crawley) Watson 

 [Figures 11 and 12] 



1903 Amphoroides fontariae Crawley 1913:53 



1913 Amphoroides fontariae Ellis 1913b :274 



1916 Stenophora fontaria Watson (This paper) 



Stenophora: Sporonts solitary, ovoidal. Maximum length 135^; 

 width not given. Ratio length protomerite : total length :: 1 :4 to 

 1 : 5.5 ; width protomerite : width deutomerite : : 1 : 1.5 to 1 : 2. Pro- 

 tomerite subglobose, widest in posterior two thirds, tapering to a blunt 

 cone. Deep constriction at septum. Deutomerite elongate ovoidal, ter- 

 minating bluntly. Endocyte nearly transparent in protomerite, very 

 opaque in deutomerite. Nucleus not always visible in vivo, small, spheri- 

 cal, with one karyosome. Cyst and spores unknown. 



Taken at Wyncote, Pa., Raleigh, N. C., and at East Falls Church, 

 Va. Hosts: Polydesmus sp. and Fontaria sp. Habitat: Intestine. 



Leger (1892) created the genus Amphorella, afterwards renamed 

 Amphoroides by Labbe (1899 :20), to include species with solitary ovoidal 

 sporonts having a protomerite short, compressed and crateriform, and 



